The Best Flea Collar? Seresto Collar Product Review

Seresto-collar

It’s a bird! No it’s a plane! No it’s a super flea collar! Well maybe it is not a super flea collar, but compared to other flea collars, it is quite a superior product. Let’s face it, if you are still buying flea collars from the grocery store, you are not likely getting the flea protection you need. Majority of these collars only repel fleas just in the area around the neck. If you look further back, you are likely to still see fleas feasting on your pet. But Seresto is a different flea collar. It protects your pet’s whole body from these blood sucking critters for up to 8 months.

How it works

Seresto has sustained release technology that slowly releases active ingredients over several months. Once the collar is applied, active ingredients are transferred from the collar to the hair, and finally the skin. They are then distributed evenly throughout the skin and hair surface.

Active ingredients and their effects

The Seresto collar has two active ingredients that have activity against fleas and ticks. Imidacloprid kills adults fleas and flea larvae which is important for breaking the flea life cycle. Flumethrin is the ingredient that repels and kills ticks. It also kills the larvae and a younger stage of the tick called the nymph.

 Seresto collar vs store bought flea collars

Kill fleas and ticks very quickly – It can kill fleas as quickly as 2 hours and ticks within 6 hours. Speed of kill is important with flea and tick control. You want a flea dead before it is capable of laying eggs. This period is usually within 24 hours. Ticks also need to be killed in the same time frame to avoid transmission of diseases. Store bought collars are more likely just to repel vs kill and if they do happen to kill, the process is very slow.

Is odorless and has leaves no residue –  Other flea collars typically have an overpowering odor and tends to leave a white powder residue on your hand.

Provides long lasting and effective protection –  Seresto provides protection for up to 8 months killing more than 90% of fleas even on the last day. Most other flea collars only provide up to 3 months of protection with the percentage of fleas killed over time decreasing dramatically.




Special features

Seresto collars also has neat features that further separate from traditional collars:

It is water proof –  Seresto maintains its effectiveness despite exposure to shampoos, swimming, or exposure to rain.

Break away release mechanism –  Portions of the collar are designed to release in the event the pet gets trapped.

Reflector clips – Reflect clips can be applied to help with visibility of your pet during night.

Pros:

  • Provides 8 months of flea of tick prevention which is longer than any other product out there. Great for those who are forgetful. You just put on the collar on and it will do the rest.
  • Can save you money when compared to equivalent flea and tick preventatives such as Frontline. The cost averages just about $75 for a year of flea preventative while the alternatives are about double that.

Cons:

  • It is a collar that is only effective as long as the pet wears it. If the pet decides to take it off then coverage is lost.
  • May not work as well with breeds with thick coats such as Malamutes, or Great Pyrenees.
  • Even though it is waterproof, if exposed to water too often it can lose up to 3 months of its duration.

Wrap up

Seresto collars are the best flea collars out there given its effectiveness and longevity. Is it the best option for flea and tick prevention overall? Well that all depends on preference. If you prefer flea collars over topical products then this is your best option. Also if you struggle with compliance then this is a great option as well. You just have to remember to change the collar in 8 months. I personally prefer an oral or topical flea prevention because I worry about my pet losing the collar and becoming unprotected. But that is just me. My recommendation is before you get this collar, make sure your pet will keep a collar on.

Seresto Collar by Bayer

9.4

Reliability

10.0/10

Price

9.5/10

Duration

9.5/10

Safety

9.0/10

Effectiveness

9.0/10

Pros

  • 8 months protection
  • Reasonably priced

Cons

  • Collar only effective when worn
  • Waterproof but excessive water affects potency
  • May not be effective in thick coat breeds

255 thoughts on “The Best Flea Collar? Seresto Collar Product Review”

  1. I’m sure this is probably a good product. However, my 3 female dogs play really rough with each other. The chew regular collars off of each other. So far martingale collars are the only ones they have not chewed off each other. They may be girls but they don’t act very ladylike. I have been using Bravecto with them and my daughter’s husky and so far so good.

      • What are the circumstances surrounding your dog’s death? Was Bravecto confirmed by your Vet as the reason for the death? We’re interested in trying this medication and are concerned. thank you.

        • I would be concerned. We used the collar and over time our elderly dog started to be ‘spaced out’ and effected. She couldn’t move normally but would stand there – which is not normal for a jack russel. She started to go downhill – and we thought we were going to loose her.

          thank goodness a friend suggested we remove the collar. She bounced back and has been well ever since. No recurrence of any symptoms. We love dogs and are distressed there is a product that can cause this reaction in the market.

          • RLawrence
            Could you tell me how long it took for your dog to bounce back. ? My dog had the same reaction. Emergency Vet told us it wasn’t the collar, but has same symptoms .I had them remove it immediately. 4 days in the emergency hospital and thousands of dollars in test / ultrasounds later we took him home. Took the collar off 5 days ago, still not eating and is not reactive or himself.

          • Hi Jeanne – sorry to hear your dog is sick. Our dog started to improve once the collar was off, but it took a week or so for her to recover.

            Bayer vet told me the chemicals go into the fat – my dog is very lean so I’m not sure if that made it worse. Hope you dog improves soon…

          • Personally i think its more about the dog individually. A flea collar is a form of medication. Like people, animals will react differently to medications. For example, for many Benadryl provides effective allergy relief. For a small minority, Benadryl causes a severe allergic reaction. Does that mean Benadryl should be taken off the market? Well it would really suck for the many many people who need it!

        • Try Dr. Mercola’s herbal flea collars and spray. No harmful chemicals and it smells very nice. Many products kill fleas and ticks and also your pet’s liver. They are toxic ! Use herbal remedies.

      • I personally feel that If you want to make a comment about something you tried with a pet of yours the resulted in death, the very least you could do is provide details because after all, we still have a lot to learn from each other.

        • This collar is the only flea treatment to work for my Rottweiler in flea covered Florida . I researched it and found that it is often a counterfeit product if purchased online. I make sure to only purchase at a local pet store. It has been a lifesaver for my pet.

    • I have seresto for our 4 dogs. It doesn’t seem to be working. I still see fleas on my dogs and one of my dogs seem to be most effected. They are all new collars and I am very disappointed in my investment.

      • I put sorresto collars on all 3 of my animals in mid-July. They’ve done very little good. The fleas are on them still and laying eggs. The vet checked how they’re on, to see if they were properly tightened, everything is right. They’ve not gotten wet except for 2 baths. So why are my animals still being covered with fleas and eggs?? My cat has typical shorthair fur, my dogs are chihuahua and poodle, so coats aren’t too thick. If one wasn’t working, but the other 2 were, or even one were working, I’d think I just got hold of a bad one. With all three not working, though, I have to wonder what’s going on. I’ve used them previously, with decent results.

  2. Where I live, fleas and ticks are only a problem a few months out of the year. Could the collar be sealed up to reuse? I wouldn’t keep it on my dog unless the critters were active as I don’t like using chemicals on him unless necessary.

    • That is a good question Val. I am not exactly sure once the collar is activated if it can be reused. Something definitely worth looking into. I still recommend flea control all year round because fleas can still remain dormant in your house no matter what the weather is. This is because they lay so many eggs that tends to stick on carpet fibers and in between cracks of hardwood floors. But if you choose not to follow my recommendations then the best choice for you would either be a monthly topical or oral preventative. I would hate for you to buy the collar then it does not work when you attempt to reuse it.

  3. Dr Alleyne,

    I am so glad to have seen this review. I have lived in many states all over the South – Virginia, Alabama, Texas – but here in MO the fleas are like no fleas I have ever seen. They seem to be almost completely immune to Frontline, and Revolution costs twice as much. We have used these in combination with “natural” remedies such as diatomaceous earth, our cats are still absolutely crawling with fleas. In desperation I bought 2 of these collars just yesterday. I’m afraid to put them on the FELV+ cats though.

    • Yes Revolution can be expensive. Usually when the topicals fail you can also try the oral meds to see if they help. The only oral meds that I know that are approved for use in cats are Comfortis and Capstar.

  4. We purchased the collar and my little dog is still scratching and itching. I don’t know if it’s just that my dog is really sensitive or just the collar is not working. I really need the collar to work because I am highly allergic to fleas. I have spent plenty of nights scratching along with my dog. I have sprayed an indoor spray to prevent more fleas and their eggs. We have tried tons of products before trying this one. So i’m going to give it a little more time even though the collar should have worked by now. I just hoped this really works because if it doesn’t, I don’t know what are we going to do.

    • Are you still seeing fleas on your dog Richard? How long have you had the collar for? If your dog is till scratching and itching but you are not seeing the same amount of flea it may be because your dog has other allergies as well. Also if your dog has flea allergies they can lead to a skin infection that still may be needed to be treated by your veterinarian in addition to the flea collar.

    • I have a Pomeranian and thus far the expensive collar has proved worthless. I’ve been reading lately that thicker coated breeds (with double coats) don’t have the collar work well for them. I’d guess this could be because the collar doesn’t have as clear a contact to the dog’s skin as with a dog with a shorter coat.

    • The inside flea spray never worked for me so we used table salt and sprinkled it all over each of our rooms floors and then left it there for 24 hours and vacuumed it up and they were gone! It was like we never had fleas! Since you’re allergic I thought this might help keep them away. Plus if you have inside pets it’s a lot safer to put on the carpet and keep your animals from getting sick!

      • I had a terrible problem with fleas a few
        years ago. I would definitely try this salt idea. Frontline failed me. A very resistant breed of fleas. My new little dog has allergies. I have found about a teaspoon of honey –a GOOD honey– has stopped her itching 99.9%! Worth trying for hot spots. Only downside is the calories.

      • diatomaceous earth is good for home treatment too but make sure you get food grade won’t hurt anyone but the bugs anything with an exoskeleton to us its like baby powered or flour to them its like putting broken glass all over the house it pretty much kills them by cutting them up

    • My Jack Russell has been wearing his seresto collar for 2 weeks and still has a flea issue. I just ordered his Nexgard again,it is the only thing that works. I just tried the collar so I didn’t have to keep up with a monthly treatment,was a big mistake,and money wasted.

  5. I put this collar on my dog a month ago and he has just as many fleas as before . It was purchased at Walmart so is it different than one you would buy at vet office? For years I have used Frontline from both vet office and pet stores but that has stopped working also. My dog has never had a flea problem like this it seems these feast are immune to the products. What should I try now?

    • What type of dog do you have Donna? I mentioned in the review that some people may have issues with dogs that have very long fur. If you are having trouble then you may want to try an oral flea preventative such as Nexgard or Bravecto to see if that helps with the fleas. I know there can be differences between flea products you get from your veterinarian and from the store mainly because of distribution

  6. We have a 25 lb dog that loves to sleep in a variety of bedrooms, is it safe for children to sleep with (youngest 11yo) and does any “product” from the collar come off on the bedspread?

    • According to Bayer the collar is not like other flea collars so none of the product comes off on the bed spread or will be affected if a child sleeps next to a dog.

  7. Hello…

    Last month I purchased a series to flea and tick collar for my dog. She was due for another one. The one before this had done its job.
    Today, I picked my dog up at the groomers and was told she had a tick on her ear. Yuck!!
    Needless to say, the collar is new that she wears, is on tightly and I already received my rebate for it, but apparently it is not doing its job.
    What do you suggest that I do?
    I have the box that this collar came in and the receipt for the purchase.
    Thank you for your time.
    Wendy k Wright

    • Hello Wendy where did you buy the Seresto Collar from? Did you buy it from the same place both times? Do you know if the tick that was found was engorged? There is a possibility that you may have gotten a defective collar especially if it worked before so you may be able to contact the Bayer company about getting a replacement.

    • Hi, just an FYI, the information for the collar states that it repels and or kills ticks so I believe that means a tick may still bite but will die when he does. My dog has ticks everyday in this weather , some did not bite yet and the rest are usually dead when I take them out but they don’t fall out when they die just so you know. I have so much experience with ticks unfortunately if you need to know anything else

  8. bought 3 of these collars, for my small dogs, from petsmart, (at $55.00 per unit), in the 6 weeks that they have been wearing them, there is no change… they scratch constantly. I have sprayed the yard, and area, that they frequent, we have “bombed” the house, and nothing changes this is quite a waste of money

    • Hello Chuck are you still seeing live fleas on your pets or are you judging that the collar is just not working by the fact that they are still itching. If you took the appropriate actions to get rid of the fleas, which it looks you did then something else could be going on as well. In addition to a flea problem your pet may have other allergies that are causing them to itch as well. In addition to the flea treatment you have provided they may need to see a veterinarian to rule out other allergies. So don’t throw those collars away as of yet.

      • Hi last year I had a huge success with the collars on our German Shepard and our Schnauzer. This year I am on collar number 2 (first one wasn’t working) tried another after 2 weeks still finding live fleas, we went from one flea to many! I don’t know what has changed with the collars, but very disappointed….

    • My 11 yr old retriever had it on for 6 hrs and was scratching like crazy on the top of her neck, she started breathing funny. I took it off and her neck and head were red and sore.
      I just read a TON of bad reviews. ….waste of $$

      • I put this collar on my six year old Springer. This dog is probably one of the most gentle animals who ever walked the earth. He was until i put the collar o in September. We noticed subtle changes in November. By mid December he was a nervous wreck. He even began to growl at us. By Christmas he was out of control. He began panting, pacing, and stopped taking our commands. We took the collar off December 28 and almost overnight we had our dog back. I believe that if we had not removed the collar he would have died. My advice to a dog owner who is considering using Seresto is to investigate reports of behavioral changes and even death attributed to this product.

        • Hi Michael – we had the same time experience with our jack russel. She was spaced out, growling yelping and over time started to try to bite us all. We removed the collar and got our dog back. We also think she would have died – she was really unwell. Horrible experience.

    • I live in Florida and our fleas are year round. The only thing that really works for me is applying food grade diatomaceous earth to my one carpeted room. I have two totally indoor cats and one indoor/outdoor cat, plus a Boxer and a Lab. I’m cautious with flea preparations, because the Lab has a mild seizure disorder….

    • I posted to someone else about diatomaceous earth for in home but for yeard try benificial nematodes goigle them for more information. you can treat your dog all you want but if you dont do all 3 things they will keep coming back i have found thing for yard and house that are the 2 things mentioned above but still looking for something for the dogs. My friend used the other with great results and suggested this collar but i like to do my research first as i have a 4 month old baby in the house

  9. I agree that it is very effective but I totally disagree with the information above regarding residue. It absolutely leaves a film or residue on my Shih-Tzu’s hair. Last year was the first time for her and I was very unhappy with this. Had to wash my hands every single time I touched her for about 6 weeks. Gradually it lessened till none was noticeable. For me this was the only con, she gets deer ticks almost every day for 8 months of the year and if I don’t find them right away they are usually dead when I take them off. So, she is due for the second one and not looking forward to the nasty residue but the pros outweigh the 1 con here.

  10. Exceeded my expectations..IF i wanted my dog to go BALD and scratch his flesh from his bones!! The worst investimate I have ever made. The term SICK AS A DOG applies here without a doubt. Whined, hot spots,fur loss appetite supressant.. sounds like a nightmare?? no it was real life. My poor GS was in agony, and I along with him. I also noticed his hind leg was weakend slightly. After reading various reviews and being to coincidental I Quickly removed this strip of Death. Returning it to the H e double hockey stick it came from. I wonder if RAID works that way on insects! Sarcasm….I hope my baby boy comes around and gets his beautiful fur back..fur parents be warned.. this is NOT a good product to experiment with on any living animal..Offended by the Bayer company with its lack of CARE…way to go that extra mile making those $$$ bucks…

    • My dog is doing great with this collar, but my mom’s cat was terribly allergic. Lost her hair, scratched till she bled. I’m allergic to dairy bit you don’t see me cursing cows. Sorry it didn’t work for your pet, but that doesn’t mean the product is bad, could just mean it’s not the right fit for your pet.

    • My dogs are both on this and as of last night I removed the collars. My dogs are tired all the time, they are still itching and I saw 2 fleas on my male. I hope they can get back to the happy pups that you used to be …

  11. We just took our dog in on Friday, June 3rd because he was limping, they tested him for lyme’s and it came back positive,he is just over a year old,he is a shepard and hound mix but his hair is short not long. I have had the collar on since March since ticks were out in WI. I used this collar on our other dog last year and the only ticks I found were dead, so I thought the product worked well, very disappointed.

  12. I have 2 yorkies that I bought this collar for. And they have more fleas on them then without the collar. I have treated my yard and my home. I am very displeased with this product.

    • Same situation for us -our dog had an engorged tick on him while using the Seresto – I called Bayer and the their rep flat out told me “they don’t work ALL of the time” – what a joke.

      • I ha e used Seresto for three years and swore by them ~ All good things come
        To a end !!! All the money put out into 6 collars and
        This year they all failed ……… Had
        To of changes aomething I will never buy them again 👎🏼

  13. This product does not work really disappointed for what I paided for it . I have 2 Yorkers one had a collar (seresto collar for fleas and ticks) that dog had more fleas than the other one. So customers don’t buy this product a waste of your hard earned money.

  14. For those who are having issues with the collar, where have you purchased the collar from? I know of reports of people selling replicas of this particular collar especially online.

    • I bought mine from Petco last night. I just spent $150 for four of my small chi dogs. They are scrambling and scratching and I’m still seeing fleas. I’m doing wash (laundry) so hopefully they will get better.

    • I am picking up two large collars at the vet. I have a collie mix, and an elderly blind, diabetic pug. Should I be worried about putting one of these collars on my pug??

      • My elderly jack russel became extremely unwell with the collar. It effected her neurologically. Bayer tried to scare off anyone who says the collar causes reactions – so I don’t think all the reactions have been logged. I definitely wouldn’t use it on a small elderly dog.

      • I agree with R Lawrence…they are not logging in these negative reactions. I put one on a 4yr old very healthy Goldendoodle and it made her very sick. It took a few days for this to happen…..once I took the collar off she started getting better….and within a few days she was back to normal. I feel she would have died if I had kept it on her. Bayer refused to hear me….and said it had to be something else that made her sick. She is in a routine house environment..and this collar was the only change. I would NOT put this on a elderly small dog.

        • This was also my experience with Bayer – they started from the premise that the collar ‘cannot’ make the dog sick and therefore they were looking for other causes.
          We also would have lost our dog – she was that sick – if a friend had not suggested removing the collar. Once removed the dog got better and has remained very well.

    • I bought my collar ( which made my dog ill) from a reputable pet shop – it was the real deal and was not bought online.

    • My collar doesn’t seem to be effective . She (17 lb Schnauzer ) comes in the house with fleas and is constantly itching all day. This is the second collar we’ve bought in the past two years and the first one worked fine . The current collar was purchased through Amazon Prime and says it was made in Germany. So whats up ?

  15. My 5 yo male Lhasa apso picks up ticks often , he seems sensitive to flea and tick products so am wondering what this will do to him , he’s sick within 10 mins after orally ( comfortis,bravecto) stronghold or frontline didn’t work so this is my last chance , I purchased one from my vet but am scared to put it on him as I don’t want to make him sick . Please reassure me re safety …..

    • I have a 5 yo male lhasa who also was senditive to oral preventitives i have just purchased his 2nd collar as his stopped working after 6 mnths other than that no problems and v effective even upto a few weeks ago .

  16. Boy I hope I didn’t make a mistake because hearing these reviews I am beginning to think that I did. I just purchased five (5) of these collars for my five (5) cats paid $238.00. I purchased them from 1800Petmeds. They have only been on my cats for two days. Oh well only time will tell.

    • They work fine. I have 4 cats and a dog. I washed them all before applying the collars but have had great results. Just watch them colsely first few days, some animals have allergic reactions.

  17. I got the Seresto for cats for my DSH cats. After initial two months of relief the fleas are back with a vengeance. The are even found under the damn collars.

    • Al, what did you wind up doing? Do you know how long i should wait to use something else? My poor Simon has the same problems your baby did. Idk what else to do. Me bathing him is out of the question unless i want to be put in the store next to the ground beef

      • Here’s what i did to keep fleas away from my cat once he got them. Sprinkled salt EVERYWHERE(floors, furniture the cat gets on, his bed) in the apartment and let it sit a day or so to dessicate the fleas and eggs that might be around on these areas. Got a flea comb and a bowl of soapy water and, combing out my babyboy (15 year old cat), would dip the comb into the water each time had a flea on it after raking it gently through his fur (do this at least once a day until you can’t find anymore fleas. The soap helps keep the flea from jumping out of the water) Put brewers yeast into all his food (Lewis Laboratories makes an excellent yeast; I like best the one that doesn’t say “granules” or “flakes” on it, for it is powder, but the canister doesn’t say this,) because fleas hate the taste of animals’ blood when it has a fair bit of brewers yeast in it, and animals generally not only love brewers yeast taste, but will be getting a great source of protein and B vitamins with it–making it a great product for HUMANS to consume, as well (do NOT feed them “bakers yeast” that is used for making breatd; it is a completely diferent product and will harm the animal). After giving the salt a day or two to work, thoroughly vacuumed EVERYTHING including cracks in floors, baseboards, and furniture to get out all eggs, and after vaccuuming no longer shows egs, etc, and cat no longer shows fleas (in my case, took just a couple of days, but then I didnt let him outside again), put the vacuum bag into a well sealed plastic bag and throw it away on the offhand chance there may be any flea eggs in it that still could hatch, or any live fleas. Good luck trying this COMPLETELY nontoxic approach to getting rid of fleas, which might work with dogs, too, esp if you do other nontoxic stuff like the diatomacious earth suggested by some of the other posters.

  18. I bought this collar , really hoping it would work.
    Unfortunately it does not live up to it’s claim of 8 months, with even 1 month. It did not work at all for my pet.
    I had to buy other flea medication to get the fleas off my pet and have him comfortable again.
    When I contacted Bayer, they had excuses, basically blaming me for their products in effectiveness.
    Will not purchase Bayer products again.

  19. I have an 18 month old boy who loves to play with his dogs. Is it safe for my dogs to where these collars around him. As we know 18 month old babies play with anything and then put their hands in their mouth. He would not actually chew collar but will grab dogs around collar area and will have contact with collar.
    I have heard great reviews about these collars, but what about human contact with collar. Need info. I really want to use collars but you can see my concern.

  20. I have tried many different flea products. I tried even the Armore from Walmart. That seriously sucked as a product. Diatomaceous earth sort of works but kills the vacuum cleaner. Advantage worked very well and we were finally flea free until we moved to a new house and the neighbors had a very bad flea issue. None of the manufactured flea products work anymore. They now live at my house too. I have a short hair Maine coon cross, a heeler and a pug/dachshunds. I decided to try Soresto. It’s very expensive and I have an extremely limited budget. It’s been on them for a month and there is no change. I still find the same amount of fleas. I live in SW Washington state. If you and all the flea product companies are going to charge a ton of money you have better make sure your products work and work well everywhere. You charge enough for all you other products to do so. I am very disappointed in the product.

  21. This is the second ’round’ of Seresto that I’ve used on all my dogs. I’ve been very pleased with the product. We went from heavy fleas to zip. What is really weird is that yesterday I found a ton of fleas one of my dogs (a short coat aussie) even after the new collar was on for 2 months. Hmm. She was in one of our kennel runs for the two months and I brought her into the house as I’m treating her for tape worm and I like to rotate the kennel dogs through the house. So I tightened the collar thinking that was the problem. This morning, still fleas. I put on a new collar (different lot number) and I’m still seeing fleas 4 hrs later. The two other dogs in the house with her have their collars on (2 months on) and are completely flea free. I’ll give it 24 hrs and see if tomorrow she is flea free. Not sure if the collar doesn’t work while treating with Strongid or the fact that she has not been bathed and her natural oils are working against the collar. Other than this ONE dog, this product is great. We order from Foster Smith. They’ve always been very reliable.

  22. This is a follow up to my post yesterday. I called Bayer and asked about Seresto. It appears that my problem is that the flea population bloomed over what could be handled by the collar alone in the dirt kennel due to the weather. The person I talked to suggested that I treat the kennel for fleas to knock them back so that the collar will work. I should have done that initially but I didn’t. Also she said that I can use advantix on the dogs to do an immediate kill while the kennel treatment took hold. Basically the Seresto collar works on fleas but when you are in the deep south (like I am) fleas still need to be area treated as well. That is what we stopped doing when we put the collars on our dogs. My bad.

    The Bayer Vet service tech was awesome to talk to. She answered a lot of my questions. They take their product seriously and want to know any problems that arise with it. I gave her the lot numbers but told her that the same lot number collars were on my indoor/yard dogs and they work fine so it is not a QA/QC issue.

    • I’m from Philly but live in Alabama now. I’ve had indoor cats for 45 years and never had a flea problem. Ever. This summer has been horrible. I guess we carry them in because they never go outside. I just put a Seresto on my worse afflicted cat, if it does I’ll order 2 more tomorrow. The vet’s expensive stuff, one topical, one by mouth did nothing. Fingers crossed it works cause I’m so scared for them. I’ve even bombed the house 4 times. Since you live in the South too maybe you have suggestions about what I can do to stop them coming in the house? I’m hoping the collars work and then when there’s no live fleas on them I can spray & bomb again. Thanks.

      • Barbara I just posted the following comment elsewhere on this blog but haven’t seen it show up so maybe it didn’t go thru. I’ve added a few words to the final sentence of it to clarify something I realized needed it after I posted it. I hope this info can help you with your cats’ flea problem if you’re still experiencing it:

        Here’s what i did to keep fleas away from my cat once he got them. Sprinkled salt EVERYWHERE(floors, furniture the cat gets on, his bed) in the apartment and let it sit a day or so to dessicate the fleas and eggs that might be around on these areas. Got a flea comb and a bowl of soapy water and, combing out my babyboy (15 year old cat), would dip the comb into the water each time had a flea on it after raking it gently through his fur (do this at least once a day until you can’t find anymore fleas. The soap helps keep the flea from jumping out of the water) Put brewers yeast into all his food (Lewis Laboratories makes an excellent yeast; I like best the one that doesn’t say “granules” or “flakes” on it, for it is powder, but the canister doesn’t say this,) because fleas hate the taste of animals’ blood when it has a fair bit of brewers yeast in it, and animals generally not only love brewers yeast taste, but will be getting a great source of protein and B vitamins with it–making it a great product for HUMANS to consume, as well (do NOT feed them “bakers yeast” that is used for making breatd; it is a completely diferent product and will harm the animal). After giving the salt a day or two to work, thoroughly vacuumed EVERYTHING including cracks in floors, baseboards, and furniture to get out all eggs, and after vaccuuming no longer shows egs, etc, and cat no longer shows fleas (in my case, took just a couple of days, but then I didnt let him outside again), put the vacuum bag into a well sealed plastic bag and throw it away on the offhand chance there may be any flea eggs in it that still could hatch, or any live fleas. Good luck trying this COMPLETELY nontoxic approach to getting rid of fleas, which might work with dogs, too, esp if you do other nontoxic stuff like the diatomacious earth suggested by some of the other posters, but SPRINKLED ALL AROUND YOUR YARD (not indoors, as I understand it can damage people’s vacuum cleaners; salt will NOT do that in my experience) and any other area around your house that fleas could live and be carried in on your clothes even if your animals don’t go outside [starting with the all caps through the end of that sentence, is new from the last time I posted the above coment]

  23. I live in a rural area with livestock and other critters and nothing worked,my Jack Russell terriers had horrible fleas,even our house was infested. I saw the ad for seresto and bought immediately,within 24 hours the doggies had no fleas and within 48 there weren’t any in the house. Just curious if there has been any side effects from long term use? Really like this product.

  24. I placed this Seresto Flea and Tick collar on my beagle-mix girl on 07/03/2016. A few days later, she had a seizure. I did not connect this seizure with the Seresto flea collar until this morning 07/28/2016 and I had to leave her there so that they could provide the anti-seizure medicine and also monitor her. I rushed my girl to the emergency vet clinic because she was having multiple seizures — horrible!!!! I had to leave her there so that the medical staff could provide the anti-seizure medicine as needed and monitor her. I called the emergency vet clinic immediately when I realized that this Seresto Flea Collar could be the culprit of my girl having these issues, and told the medical staff to PLEASE remove the Seresto flea collar. Less than a month since she has been wearing this Seresto collar that has been raved about so much. The collar is a health hazard to humans and people. I have paid over $450 so far for my girl’s medical. I PRAY THAT SHE IS GOING TO BE NORMAL AGAIN AND ALIVE!!!!!!! I AM SO SICK TO MY STOMACH — I TRUSTED THIS PRODUCT, AND I WILL BLAME MYSELF FOR PLACING THIS COLLAR ON MY GIRL WITHOUT DOING FURTHER RESEARCH ABOUT IT.

    • ALL flea and tick products can cause seizures. Not just this one. Also your pet could have done well with it before and had a reaction after buying a new collar, after all these are pesticides designed to cause neurological damage to the fleas. Not all pets react the same to each pesticide.

    • Before applying anything to my furry kids i thoroughly research all products for positive\negative. It distinctly says may cause allergic reaction in pets which means you monitor your pets reactions for first 48 hours.
      The collar happens to be a very strong effective collar. Im sorry it didnt work out for your pet.

      • You say to ‘research’ the product. I read all the product disclosure statement when I bought the product and it does not say Seizures anywhere. Bayer does not admit that a dog or cat can have a seizure from using this product – as all the reactions are not logged with an open mind. The conversation that I had with the Bayer vet was that the collar could NOT be the cause.
        It took longer than 48 hours for our dog to have seizures from this product. Bayer needs to: 1) update their PDS 2) be honest in logging adverse events
        Please reconsider using this product on your small elderly pooches … ours suffered terribly…

  25. Hello-
    We purchased 2 Seresto collars from Amazon in early May and placed them on both of our dogs on May 6. These were purchased as a preventative measure not a solution to an already flea problem. By the end of the month both of our dogs were covered in fleas. We have a Powder Puff Chinese Crested and a Great Pyr/German Shepard mix. I called Bayer to express my concern and I was told that we were already in the middle of a flea cycle that we didn’t know was going on and that I should add Advantage to help correct the issue. Seresto boasts that they repel fleas. (For 8 months, this product: Kills and repels fleas before they lay eggs Kills and repels ticks). I was told over the phone that nothing can stop a flea from jumping on your dog. Isn’t that what “repel” means? As you can imagine I was not happy, as I have already spent $112 on 2 collars and I am now being told that I need to spend more money. We added the Advantage to the treatment, but at this point, we are now so covered nothing seemed to be working. Our vet recommended Nexguard. Within 12 hours both dogs were flea free. I called back to speak with Bayer and yet again it is all my fault. Now, last year we used the collars as a solution to the problem and it worked fabulously, so I know the product works. I believe that we received bad collars. Bayer would not talk to me about reimbursement or replacement for the collars. I even offered to send them the tins , my receipts, and the collars. Supposedly they sent me a supply of Advantage back in June, but I have yet to receive that. I don’t believe I will ever be purchasing another Bayer product, and that is too bad, as they have always been great products. This is the direct result of terrible customer service that looks to place the blame on the client.

  26. I’ve tried topical Frontline Plus, Advantix II with mediocare results. Didn’t last long and creates ‘oily’ spot where my dog like his scratches the most. Tried the seresto collar 2 years ago, and have had zero issues. My dog is a Nova Scotia Duck Tolling Retriever (heavy heavy coat!!), so the dense undercoat didn’t negatively affect performance at all. Told 2 friends here in the north Dallas area about the collar, and their labs have been tickless and flealess. I can’t believe so many negative reviews about this. I think it’s better than sliced bread, so there’s my two cents.

  27. Also, I forgot to mention our cat has also been wearing one for 4 months now without any negative reaction. Only flealessness going on in this house. No ticks either on dog and cat.

  28. I bout 2 dog collars, both dogs short hair, and they still have fleas. A lot of them! I followed the directions precisely. It’s the second month of wearing them. They have received two flea baths. These were not cheap. I bought one for my cat as well. I don’t know if it works on my cat because I only see him when he’s hungry this time of year.

  29. I put this flea collar on July 28.
    My small dog with little fur, is still fighting fleas and their eggs. I’m so discouraged! Tired of these fleas!
    Carlin

  30. Hi, I’m Nicky. I was given (graciously) a collar from my husbands cousin about 10 months ago. We quickly put in on our Chesapeake Bay Retriever and we noticed no fleas when we took her a bath about a week later. It worked the duration it promised and now she has fleas again. We just ordered another one off Amazon, same vender the cousin ordered from. I just went about bought 2 from Walmart yesterday morning for my two small Dachshunds, one had an allergy shot at the vets early yesterday. Our vet said the scratching and hair loss was due to flea allergies, thus the shot. I immediately put the collars on my two doxies, however, this morning I noticed (to my horror) my non-allergic dox had MORE fleas than BEFORE the collar!! I mean, they were crawling ALL OVER her belly! I immediately got a wet paper towel with a dab of Dawn and gently rubbed her belly and back to kill the fleas. They died but some are still there crawling and numbing around (((eww))). My other doc is still scratching, though not as much as yesterday. How long will it take to repel the fleas??? I guess it may have taken awhile to work on Bailey, our Chessy, but I didn’t check her until a week later during her bath. I’m worried that this very expensive collar may not work on our doxies and/or bring more fleas into our home!! Has anyone had an experience like mine? Am I just being impatient? I just don’t know and I’m desperate for the fleas to leave them (and us) alone. Thank you, Nicky.

    • I just got off the phone with someone and bae or I was looking for advice on product to use and she recommended the Seresto. She told me that it is critical that you buy it from an approved seller. She said that that can make all the difference. She recommended buying it from an approved seller. I asked her if she chewy. Com was an approved seller and she said yes. Buying it from a pet store or Walmart Etc does not guarantee that you are getting the official product. Hope that helps. I still can’t decide what I want to do. These flea and tick remedies scare the hell out of me

  31. I put the seresto collar on my toy poodle and flea issue improved after three days but he is still dropping live fleas. I put collar on my 3 cats as well and I do not see any fleas dropping. Why are the fleas still on my dog?

  32. I used this call on my schnauzer my German Shepherd mixed both of my dogs had severe reactions from these colors it cost me $500 to get them well I suggest that you be very careful using this because not covering will not be allergic to the ingredients so I contacted bayer and they said that they would make it good but I haven’t heard anything back from them I will never use this product again

  33. DO NOT USE THIS COLLAR FOR YOUR PETS!!!!! We almost lost our beautiful 5 year old golden doodle due to the Surest collar. It definitely works by killing fleas and ticks I haven’t seen one in over a year, but at the cost of our poor girl going blind, deaf, no smell, head pain, eye pain, brain swelling, silent seizures, incontinence, breathing problems, not eating, tremors, you name it she had it. After a prolonged year of wearing this collar her body became toxic. all the blood work came back normal and the vet had no idea what was wrong with her. we paid for blood test after blood test after blood test, then told we should bring her to a neurologist. I have lost faith in my Vet and now in Bayer, who makes seresto. our family, my children and my dog have been through so much emotion and stress that was completely unneccsassry. I trusted my vet and I trusted Bayer. Luckily, after 24 hours of not having the collar she is bouncing back nicely. Now we have to detox this poor girl! Thanks Bayer! not

    • Same happened to our dog – vet, emergency vet, seizures, unable to walk and jump. She has bounced back nicely now collar is off.
      🙂

  34. Hi,can someone help?my little yorkipoo has has a reaction to this collar(lethargic and problem walking) ,I have taken it off but I am worried as my other dog has one (no reaction) will this effect my little dog is they sleep together in the same bed?
    Thank you in advance,Ali.

  35. My Shelby is wearing her 4th Seresto collar. The 1st 4 collars were effective in keeping her flea and tick free! She has been wearing her current collar f9r 4 months and I was horrified wgen her Vet showed me yesterday that Shelby is infested with fleas even around her neck. . live fleas were observed as well as eggs. . We i?ediatlt,replaced her collar yesterday I’ve done nothing different with her 4th collar and am wondering why after 27months of being flea an s tick free with the Seresto collar she has fleas after only 4 months.

    • Only an educated guess, but could be that a similar process is going on when fleas no longer are killed by the chemicals you’re using that once DID work to kill the fleas your animal is now being overrun by despite your using the same product, as happens with so many antibiotics that become less effective or useless against infections they used to work against, namely: RESISTANCE of the organisms to the chemicals. Essentially what happens as I understand it, is that the microorganisms in the case of infections, and the fleas and ticks, I presume, in the case of infestations with these organisms, have such frequent “next generations” that the process in which genetic variations occur naturally and those favoring resistance to the chemicals that used to kill them, make it possible for enough of these resistant individuals to survive and replicate themselves, to eventually make the general population of them be mostly resistant-to-the-chemical variants. It may take two or three years as several comments state happened that this product worked fine for a year or two or three but now is not working AT ALL, for this substitution of a largely-resistant-to-the-once-effective-chemical population for the previously largely-susceptible-to-the-once-effective-chemical population to take place, or it might could take as little as a few months, I suppose.

  36. We have two doxies and used the Seresto collar this year for the first time. The drops on their backs seemed to had stopped working so we did some research and we decided the Seresto collar was worth a shot. When you break it down the “expensive” collar is actually cheaper than Advantix II over 8 months. Both of our doxies have worn their collars well without any problems – and NO fleas or ticks. We will order them again.

  37. I bought one for my Doberman after combination of Frontline and electronic flea killing device failed (device came off collar and got lost) and my dog was infested. To my surprise, it worked great here in Florida where the fleas are brutal. Just put one on my cat, she never goes out, but afraid something that came in on the dog jumped ship and hopped on the cat and she was infested. 24 hours later, cat is feeling much better. Expensive outlay at one time, but if you amortize over 8 months, this product is a bargain.

  38. I bought these collars for my two cats, they have had them on for the past 2 days and I have only seen two fleas since I put them on.. I had them on frontline and it stopped working so I tried seresto, so far so good..

  39. I tried this last year it worked great this year my dog Molly is itching like crazy, It seems like it isn’t working at all, I called Pet smart and they said they didn’t have any recalls and I might want to call Beyer company.

  40. My husbamds mother told him to order the large collar for his 18lb schnauzer and duct tapr part of it when he puts it on. I have been told by the vet I work with that this is NOT a good idea. The dog is also 12yr old and has a uti at this moment and not suoer healthy overall. Shouldnt he use the correct size collar??

    • That is very bad advice. Buy the right size. Your dog is 12 years old. These medications are no joke. They can be lethal at worst and make a healthy dog sick at times. You wouldn’t buy a product like Frontline in the large dog dose when you are putting it on a small dog.

  41. The collar doesnt seem to work i still find fleas on my dog. I will say that it is my second collar and the first one worked excellent the second one doesnt seem to effect the fleas at all.

  42. We bought a collar last year worked great I could see the fleas falling off. Bought one again this year it has not worked. Talked to the place we purchased it would not honor it I was totally upset. Anyone else had one that did not work.

  43. I have two small dogs, one of them the fleas are constantly biting him, so I bought a seresto collar. It’s been on him for a month now and he is still chasing fleas, biting him, he chews so hard, there is usually a bloody spot in different areas. So sorry to say iam not to impressed with seresto collar. I have spent alot of money on flea control stuff and iam pretty much done with all of them, I live on the Oregon coast and iam not sure if those sand fleas are more resistant to pest control products, because I never had this much problems when I lived in Calif. Any one else experienced this problem???

    • I live in Oregon and am having a terrible time too. The first collar worked but after it wore out and I bought a second one it has done nothing. My dog is covered in fleas.

  44. I work at a vets office and I was given a Seresto collar as sample by the Bayer representative to try on my dog. I like to use the Nexgard Chewables for flea and tick prevention but these chewables do nothing to repel ticks, so the ticks bite before they die….which is gross…so I thought I would try the collar. I was skeptical about using a flea and tick collar but it actually seemed to work great. Then, here is the problem…slowly, my dog had become increasingly itchy all over, there were no focused areas such as the neck, it was just all over itchy. So I started giving her Nexgard again every month thinking maybe the collar wasn’t as effective as I thought originally. I also decided stupidly, to leave the Seresto collar on as a tick repellant as I liked the fact that she wasn’t even picking up ticks at all with it on. She continued to be itchy all over and I didn’t connect it at all to the flea collar as she wasn’t red or swollen on the neck where the collar was. Plus, there are so many things that can cause a dog to become itchy, that I figured it maybe allergies to who knows what? She was examined by my vet who agreed her coat looked shabby; she had some redness from scratching and she was losing hair. My dog was put on a 30 day food allergy trial, which means that she gets nothing but a hypoallergenic food (no treats, no chews, and no table scraps.) Then after 17 days into the food trial we are seeing no improvement. I start to think maybe it is something she is coming in contact with because we live on 15 wooded acres with tons of possible allergens. I start giving her more regular baths hoping that would improve her itchiness…the baths seem to help a little but the improvement was always very temporary. Then one day, I was about to give her a bath and all of a sudden it occurred to me that maybe it is the collar. After thinking about it, the itching had started soon after the application of the Seresto collar…it didn’t happen immediately but I am certain there was a steady increase of itching and discomfort. I immediately took the thing off and threw it in the trash, I gave her a bath and she was noticeably better after the bath….but unlike previous baths the results were not temporary…she is no longer itchy. A bit suspicious I think!

  45. Their fine if you only have one dog. They’re very easy for another dog to tear off. I spent over $200 because I have six dogs. It took one day to lose three collars and be eaten totally buy three dogs. The design is terrible not to mention what does it do to a dog who eats the collar. Chewie.com stood behind their product and we placed them free of charge. They were going to get a hold of bear and forward my email. I now have the collars on all of my dogs secured with an additional three zip ties each it seems to be doing the trick but give me a break guys. It makes me wonder if you had a flea collar on the dog and took it out in the woods and it ran through the weeds and everything if the dog would come home with the Collar enact . For the price of this item you think they would do a better job. We were owners with more than one dog in the house get your zip ties ready

  46. I bought this collar for both of my shih tzu dogs I keep their coats short. So far I see very little help for them. The package said a couple of days is been over a week. Disappointed!

  47. I just bought it hoping it works . i put frontline on my dogs 2weeks ago how long should I wait to put the collar on them.

  48. First time user of this flea collar on my new cat three-year-old. Would like to know if the toxics come off onto me when I’m petting her? Also do they come off when she licks her for? Causing any harm to the internal system of my cat?

  49. Unfortunately soresto did not work on my dog at all! My cousin highly recommended it so I got one for my jack and 2 weeks after putting it on him I’m still seeing plenty of fleas on him( that are very much alive) all the time! Very disappointed that a spent so much money on it.

  50. This is the 2nd time my dog’s Seresto collar has”disappeared! ” He’s mostly indoors. I do check it and tighten it periodically. They kindly replaced the first one as s courtesy. It works well however I can’t afford to replace in a few months. This one should have gotten me through the summer!

  51. This collar worked great last year for both fleas and ticks on our Great Pyrenees…this year it is doing nothing for the ticks…awful expensive collar if we are going to pull off many ticks daily

  52. Got this collar for our pit/shep at the recommendation of our daughter. For us, we couldn’t be happier. I did my research on reactions and watched our dog very carefully from the moment we put it on and fortunately for us he’s done well. We live in NC, with some woods on our property and tons of fleas and ticks. Frontline wasn’t helping, we needed something to repel fleas, not just kill them. I do recommend this collar, it repelled and killed everything. But pets should be watched carefully for a couple of days for reactions, and if they’re still itching but no fleas remain, then further medical care may be needed for evaluation and relief.

  53. Im renting a room and there is another dog here that never gets flea treatments and i always protect my dog from fleas etc. Will the collar still work on my dog wen the other dog doesn’t have treatment

  54. Was having problems with fleas for several months and different treatments that had worked fine before…,finally bit the bullet in the costly collar….worth every penny! First my Havenese….worked great! After we adopted a Corgi/heeler mix….got her one too. Living in the very rural country…no problems, fleas or ticks!!! AMAZING!

  55. The seresto collar is completely worthless! $60.00 dollars down the drain. Does not even help with the ticks! Please do not buy this. You will be disappointed!

  56. I have a Havenese that all of a sudden could not get rid of fleas…even the drops used in the past were not working. Got the seresto collar…gone instantly. Got one for our Corgi/heeler mix…never a problem even though we moved to the country. Great product and bought one for our newest adopted dog. Expensive, yes….but not in the long run…just fine!

  57. This was not a superior product for my little house dog. She only goes outside to potty yet we still find live fleas on her. I wasted my money

  58. I purchased a collar for each of my dogs. One is a Lab and the other a Maltese. The Lab has worn his for about 2 months and I have had to remove 2 tricks this spring (we live in Ohio). He has never had ticks prior to just using the collar. After the second tick I removed the collar and applied the FrontLine like I had used for years without a ever finding a tick. The Maltese has not had a issue with fleas or ticks using the collar so far but I did use a organic flea and tick solution on him after finding the ticks on the Lab. I am not sure why this collar has not done well but I doubt I will ever spend the money on another one.

  59. Hi, I have a 20-pound maltipoo (yes, he was supposed to top out at 8-pounds MAX!) Anyway, I tried the Soresto collar when the frontline topical stopped working. I buy mine at Hollywood Feed. We are in our fourth collar now and it has worked like a dream. We live in the South and have a very long flea season (year round with a mild winter). Never had an issue since the collar went on. Also worth mentioning- I even use the small collar, which is supposed to be only up to 18 pounds because I thought the next size up was too big on him. He is also a water dog, spends a lot of time in the lake during the summer. This did not seem to affect the effectiveness of his collar at all, in fact we went way beyond eight months before replacing, still with no problems! Now have a second dog in the house, also a small breed, who wears one also. Very pleased with this collar!!!

    • It worked for us on a Jackapoo for two years – this year it has failed. It took us a while to notice that the itching was due to fleas not allergies as we just kept thinking ‘it can’t be fleas as he’s protected for that’. Poor little fella was crawling with them and we had to treat the house etc. So just beware sometimes they fail.

  60. Do NOT USE Seresto collar!!! It doesn’t work!!! I found a tick engorged on one of my three dogs this morning after wearing the seresto collar for about 2months. My vet said it’s been there for 36 – 48 hours. The collar was tight enough and never came off. I called the vet clinic where I purchased and also the company. The company said Seresto only covers 90% of ticks. So basically, she was saying you are one of 10% and out of luck! “we can’t do anything for you.” No refund, absolutely no compensation, and no apoology. There’s no information out anywhere indicating that it only covers 90%, no small font. The vet clinic where I bought didn’t even know. By the way, if your pet goes into water more than once a month, it only lasts 5 months, not 8 months. That information is on the brochure with a tiny small font. please don’t buy it. It doesn’t work. I had to learn it after spending $180 for three collars. And I still have not received my rebate. I think they false advertise on a lot of things. And the product doesn’t work.

  61. DO NOT BUY! This is a serious piece of garbage. It simply doesnt work, and Bayer, the company who makes it, does NOT stand behind the product. I am out $140 and both my dogs are still covered in fleas.

  62. I’ve been using this product with great success for some time. However the last two collars have only been effective for around six to eight weeks. I do not know if the fleas are becoming resistant of if the manufacturer has cheapend the quality of the product to lessen the manufacturing costs. I try on several times to contact their customer support but have had no success speaking to anyone and not one of the emails has had a response. It’s too bad this was a good product. It’s now just too expensive for the length of service that it provides.

    • I had the same issue and they tried to fob me off. I think their manufacturing process is faulty as the first two collars I had were great the second two not so much. Try this email account: animal.health@bayer.com I had the same problem and they sent free collars.

  63. The problem with Advantage.. and Serestro, is that over time, species of fleas develop an immunity to the agents. I have an indoor cat. 2 Serestro collar cycles later (it has been about 1.5 years; the cat is still scratching and shedding flea eggs everywhere. Again, this is a single, indoor pet in an apartment with concrete floors (no carpet fiber). Granted, fleas aren’t jumping on me anymore like when I first started the cat with the product, but they are still present..

    TLDR: Serestro sorta works.. sorta.

  64. I have the collar on my dog and its been on her for a month or longer now. I bombed my house as well. The collar is not as great everyone says. She has fleas still. Not as many as before but she does have them. This collar was $60 and it was not worth it. I keep checking her for fleas every other day or so and she still has them. I think this collar is a joke. I do not now how people can say it fixed it %100 cause that is not the case with me.

    • I posted July 2 that my collar did not work. However I couldnt bring myself to take it off. Today my dog is flea free and has been for a good month or so. I guess it takes time depending how how bad your fleas are. Mine must have been bad. We are flea free not though and it is great! Give it some time.

  65. FYI…Regardless of what flea treatment you use, If your yard is infested they are still going to get on your animal. They will die, but they will still be on them. In all the reviews on here with the exception of one or two did anyone mention treating their YARD as well as their dog. You have to do both. The collar can only do so much. And some of the itching is normal. Use a flea comb and remove the dead fleas, that will cause your dog to itch as well. Contrary to popular belief I have never seen dead fleas just fall off a dog unless your pet has super short fur the dead ones will still be left on your pet. Watch the video that Bayer offers that shows how the collar works. Some fleas will be killed on contact, others it might take awhile but it does slow them down and kill them. But if your yard is full of them, short of putting your pet in a plastic ball…then they are still going to jump on your dog. Your pet may have 5 to 8 months of protection but your yard doesn’t. Yards need to be treated every four to six weeks depending on rainfall. And your grass and shrubs need to be cut regularly.

    • I would never have thought to treat the grass in the yard. Thanks for mentioning that. Although I’m afraid I would be fighting a losing battle in the yard since the land owner won’t do nothing about these strays around the place.

  66. Also, it takes awhile for any product to work. My dog is a yorkie russell mix, our yard is infested with fleas because of all the rain this year. I’m in Virginia. We use Advantix II. However it’s not working this year. So we are on the collar. I am 24 hours into the collar and yes my dog is still picking up fleas in the back, but they are slow crawling on his rump that I can pick them off on the top of his fur and dump them in dish detergent. He has not been biting at all. I will be flea combing him every evening to remove any dead ones because leaving dead bugs on my dog is nasty and that can cause skin problems too. Also I only buy from my Vet. I purchased one time from a pet store and interestingly that was the batch of topical that only lasted a week and why I switched to the collar…which I bought from the vet and had them put it on my dog so I could see how tight it needed to be. Always buy from your vet. It may cost more but you know where the product is coming from and that it’s not a knock off.

  67. This is the third year I have used this product for a Jack Russell x poodle mix. First two years were great. Third year the pesticide for killing fleas stopped working after 8 weeks. We didn’t notice he had fleas we thought he had allergies as he was constantly scratching. We could not believe that he would get fleas as he was being treated – but oh he had a chronic enduring flea infestation. He was heaving with fleas. The efficacy of the tick protection was still in place. Spent £150 on buying sprays etc to fumigate two houses and a car. Contacted Bayer and it was clear that we got a faulty collar. So beware! If you get one of those it’s a painful process. Two weeks later, new collar on and the use of a topical flea killer ‘frontline’ and he still has the odd flea. It’s very difficult to rid yourself of the little blighters once they are established.

  68. We live in Tennessee and have a boxer/lab mix, a dachshund and a bochi and Seresto has been superior to anything we have tried. The little dogs tend to play rough with our bigger dog and her Seresto was getting pulled off with some frequency so our solution was to take a zip tie and zip tie it to her collar. Issue solved. I have noticed though if you have dogs who in the water a lot you need to replace about every 5 months or so. Which still is just over 10 dollars a month.

  69. We had to return the collar after 1 month because we found 10 ticks on our dogs groin area, our dog is a large breed with a very thick coat,it appeared worked for upper part of him bit not lower area, sound not recommend.

  70. I used the Seresto collars on my 4 Chi’s last year and they worked great. This year I bought them each a new collar and after 2 months, they have fleas. I think they’ve changed the product or the fleas has grown a resistance to the medication. So once again, (after 2 months) I bought them the Seresto collar again thinking I got a bad batch. Nope, the collar doesn’t work. Never again! I bought these collars through my vets office. $480 and still have fleas. I will NEVER buy the Seresto collar again!

  71. BEWARE,this collar caused seizures on my husky, Bayer is denying it, even though it says it on the can. They will not back up their product, and hang you out to dry. Bayer vet Dr Tarah even stated that a dog could eat it with no effects. This is what’s called corporate greed

  72. Question
    We got it late I the year. Do. U know if we can place it in a baggie to use next flea season, will it still be effective? Would like to use for a month and bag it up to use next year.

  73. I purchased this collar for my dog in March. The ad claims that the collar protects against fleas and ticks for 8 months. After she wore the collar for about a month she became less active, we attributed this to her being older. In July, she became very ill, and she was limping. We took her to the vet. The vet found a tick on the leg that was sore and determined that she had a very high fever. He had to keep her overnight, he suspected that the tic had caused an infection. He prescribed antibiotics and steroids. After 10 days she was not limping, she felt better, but not well. We removed the collar and after about another week, she is very active and happy again. If you use this product, please notice how your dog feels. There are very many reports of animals becoming lethargic while using this collar. I did contact Amazon. They immediately sent an email to the seller, Duka Inc. The seller sent an email to me that appeared to be an automated response advising me that my house is probably infested with fleas and that is probably the problem. Neither my house nor dog has fleas.

  74. These collars are amazing. I recently moved to Ohio and the fleas are horrible, and on top of that I have a neighbor that refuses to take care of his yard or his dog, making matters much worse. I tried every natual remedy that can be googled. I used the Advantix drops, Frontline, and another one that was a pill form… can’t remember the name. Now times all that by 3 because I have 3 dogs. We added it up and over $500 was speant with little results. My entire life became about fleas, it was horrible.

    Finally we tried the Seresto collars. Within two days the itching and biting stopped, my poor dogs were finally back to being happy dogs. They now spend probably about an hour or two a day playing outside, and before I bring them inside I check for ticks and fleas and we have not seen even 1 in two months. Previously we would pull 10-20 fleas off them after only being outside about 20 minutes, so you can imagine how relieved this made us.

    I am so please with this product, my husband and I laugh about how we speant months and over $500 to avoid spending $50 a collar. The price seemed expensive to us, but lesson learned and we will only use Soresto from now on, well worth the cost.

    Thank you!!

  75. I bought the collar a week ago.
    I put it on my small dog & immediately started working. I saw fleas die & fall of my dog.
    I love it. Miracle collar.

  76. My cat had a reaction to it wearing it outside. I rigged it up an put it on the outside of his regular collarusing dental floss about every 6″. Will itstill be affective or does it actually have to have contact with the skin. An if it does what suggestioms do you have?

  77. I cannot say enough about how wonderful seresto flea collars work.i live in an area where fleas and ticks are around all year. I have two indoor outdoor cats and a German Shepherd. Since I started using these collars I have not had a flea or tick problem. Not one on any of my pets. I have told all my friends with pets to use them. I now get people asking where I got them because they work! They are easy to use and put on. Thank you for making a good reliable safe flea collar.

  78. I have used Advantage Multi spot on topical for 12 years. But now my Long Hair, very lush coated German Shepherd
    has been treated for Hemangiosarcoma and I did not want to use Advantage anymore. So I am using the Seresto
    Flea Collar for Large Dog. (I worked on my cats!)

    If I can not get the collar close enough to her skin, will it still be effective? I just noticed
    that she still has fleas running around on her head (I’m using a flea comb to check everyday for now, I only just put
    the collar on her 3-4 days ago). I don’t know how much time she has with us, but I definitely don’t want her to have
    to deal with fleas after all these years.

    thank you

  79. I wonder if my 13 year old Shih Tzu Shadow will be okay with this. He’s had allergic reactions as well as grand mal seizures with some of the flea meds out there before. He also has allergies and sensitive skin. I want to try this but hesitant with him. Although I guess I could buy one for my chi Peanut and just have him wear it for a week to see how his body reacts to it but IDK. Would it be okay to have the other furry kids in the house wearing it if he’s allergic? So many scenarios to worry about. My Mom and Sister use this for their cats so I want to try it but kind of nervous with how sensitive Shadow’s system is. :/ Peanut and my Cat Spazzy on the other hand would probably be okay with it, they’ve never had any allergic reactions to anything since I brought them home as infants.

  80. Very disappointed in the seresto collar, my dog is a havanese Maltese mix under 10#. collar worked for about 2 months. He then began scratching – yes fleas are back. He never got it wet & we always remove it for bathing. Thank you for the article though. Wonder if I can get a refund….too much money to spend on a faulty product.

  81. These Seresto flea and tick collars are a waste of money. My Pug has been wearing one continuously for a few weeks and she still has fleas! I wasted $60 on this piece of crap – based on a recommendation from a Petsmart employee. Never again

  82. These collars do not work!! All 3 of my dogs I bought them for and they are crawling with fleas, they may work in the city and if you keep your dog indoors but out in the country where my dogs go outside they do not. I’m very disappointed and mad that I spent so much money on a false product!!!

  83. Bought this flea collar for $60 at Petsmart – biggest waste of money ever! I can watch fleas crawl on my Pug, and she’s worn this collar for a month straight (and has never gotten it wet). DO NOT WASTE YOUR MONEY ON SERESTO FLEA COLLARS – THEY REALLY DO SUCK!!

    • I have to say I was completely against this collar at first. I even wrote a complaint on here saying DO NOT BUY IT! However, I never could bring myself to taking if off because I did pay so much for it. I left it on my dog. It took some time a good long few months but I can report that the last month my dog to this day has become completely flea free. I think the collars just take a while depending on how bad the flea problem is. I guess mine was pretty bad. We are all good now though. Don’t give up it is a while to work.

  84. Seresto was the only collar that worked on my dog until now. I put it on him less than 2 months ago and he is covered in fleas. I am out of options, nothing works on him and he is scratching himself raw. He’s a maltese with a puppy cut so he does not have a lot of fur around his neck and except for going out in the drizzle periodically, he doesn’t get it wet.

  85. I use this collar on my American bully. It is by far the best flea collar out there. I live in an area where many feral cats reside. They constantly bring fleas to my yard. I was washing my dog every other day. It was overwhelming. Tried other collars but they didnt work as well as Seresto. My dog has not sustained a flea invasion since placing this collar around his neck. Strongly recommended.

  86. I have had my barn cat, 2 inside dogs, a rat terrier and an aussie, on Frontline Plus, but it was losing effectiveness in killing fleas for 1 month, it seemed to only work for 2 weeks or so (especially on barn cat). I had been using Frontline Plus for 10 years with other outdoor pets and it had worked great. We live on a farm, the 1 acre yard is fenced but flea threat for the dogs is heavy from wildlife and feral cats.

    So with fleas on both dogs I started researching the next solution. A friend with working competition aussies recommended Seresto collar and she gave me a new one to try on my aussie. I figured since she is around a lot of other dogs and livestock and she is flea free I would give it a trial.

    First day, I pulled 2 fleas off dog….probably already on him. Second day I found one and decided to do an experiment. I got a small plastic jar and placed a piece of the trimmed collar in it and dropped the flea in. First hour it was jumping around and resting on the collar scrap. Hour 4 it was showing neurological issues, but still very alive. 12 hours it was twitching and slow moving. 24 hours still alive from twitching legs however not mobile. Really wished it was completely dead; I must have super fleas!

    I then placed it a lightly dusted jar of FleaBuster RX powder. Even then it took 4 hours to completely stop twitching and die.

    Not sure what to think. Yes, the collar caused neurological issues and the flea would eventually have died, but 24 hours is a long time for a kill. Maybe it works better from the oils on the dogs skin. I haven’t seen a flea on him for 2 days, so waiting at least two week to see if it really works. Yard and home were treated as I hate bugs and don’t want an infestation.

  87. We live in the upper peninsula of Michigan and our 9-year-old male Golden Retriever has been wearing a Seresto collar since May. Yesterday I discovered fleas. Took him right into the groomer who said that we should think about calling an exterminator for the house since he was so infested. Due to his long coat and his lack of an allergic reaction to the bites, we weren’t aware of the fleas. So disappointed in this collar which has seemed to work in previous years.

  88. My dogs have been wearing the Seresto flee collar for over a month now and they are still crawling with fleas. Any suggestions? They are very expensive to pay for and they not work.

    Signed very concerned consumer.

  89. Fleas and ticks are a major problem here is SE MO. We have had these on two of our cats for about six months with excellent results and are going to put one on our Sheltie as soon as her Frontline wears off. The other cat has always had skin issues and she reacted to the collar so unfortunately we can’t put this collar on her and have to use other products – she often has ticks but the fleas seem to be under control. We have eliminatedcarpet from the house, which helps. We feel this is a wonderful product.

  90. Awful!!! Both of my doodles had reactions,one of them had to go to the vet & was prescribed antibiotics & prednisone. Biggest mistake of my life buying this collar😩

  91. Bought one for my Goldendoodle and my Selkirk Rex. Both animals are still chewing and scratching on themselves after a few weeks. Spent over $100 for both collars. Not a happy camper.

  92. We use Seresto collars on our four greyhounds, all of whom have a thin coat. We live in the woods and walk through woods and fields every day. In 2017, our first year of use, we did not see a tick for the first time in years. Normally we pick a tick or two off our dogs after each walk. Many greyhound adoption groups use them exclusively. If you are having issues with fleas and ticks, I would wash my dog thoroughly using original unscented Dawn dish detergent (inexpensive), which kills and repels fleas and ticks. People don’t seem to realize that Dawn is gentle on skin but kills fleas and ticks. Soap them up head to tail. Wash, rinse and dry the dog and give it 24 hours to thoroughly dry before putting on the Seresto collar. I’d be surprised if you see another flea or tick for monthsunless your house is flea infested. If you have a flea infestation, you need to treat your carpets and dog beds with a flea killing preparation before the collars can work. I like using a flea powder on carpets and pillows. Seresto collars are the best thing we have found.

  93. This product was chewed off twice by the other dogs in the home. It also ate through the skin of my dog leaving any open sore that lasted for months after the collar was removed. I do not recommend this product of your dog has sensitive skin like mine does.

  94. I have three indoor, long-haired cats. After they became flea infested because of two rounds of Revolution not working, I bought 3 Seresto collars. This has all been very expensive, but the collars did finally work and got rid of the fleas. Now, after only 4 and half months, all of my cats are crawling with fleas again. I wasn’t even paying that much attention to catch it quickly because I assumed I would at least get another 2 months out of them. Should I try the collars again or do I need to move on to something else? Frontline, Advantage, and Revolution have not worked well (although Revolution used to work great). I’m in the south.

  95. One of the best products I have ever used.I live in the deep south in georgia and I tried everything

  96. I purchased two of the collars for my two Goldendoodles…..One pulled it off and one kept it on…within a few days the one that had it on became very sick….Vomiting, Diarrhea, confusion, not eating ….it was scary to see. Once I took the Collar off in 30 mins. she starting getting better…and within a couple of days she was back to normal. I called Bayer and the refused to acknowledge that the collar made her sick. They said in the tests that it was only neck rash that showed up….Well let me say….my dogs are house dogs, I work from home and they lived in a controlled environment. I took her to the Vet and he agreed that the collar had made her sick. They said they would refund me for the one collar that made Lucy sick..but I would have to try the other one to see if Oliver would get sick to get a refund…..I am getting this terrible product out of my house…..but I want all dog and cat owners to be aware of this. I am 61 yrs old and I have never complained or reviewed…but this is important for all pet owners to be aware of.

    • Hi Cathey – we have had the same experience. The collar made out jack Russell extremely ill and we thought we were goinbg to lose her. After some time we connected the sickness to the collar . We removed it and she was instantly better – quite well and has remained so ever since.
      I have been in contact with Bayer – and they refuse to acknowledge that it was the collar that made her ill . They also said to me that it was impossible that she got sick from the collar and it could only make a rash.
      They should take this collar off the market. Or at least aknowledge that it’s no good – toxic and harmful- for small animals

    • I’m about 3/4 of the way reading all the coments, and yours (Cathey lea Motlow on 5/4/2018) is the fifth or sixth or so that states their goldendoodles had terrible problems with these collars. My educated guess (I’m not a vet or MD but have a lot of reading under my belt about chemical injury- related issues) is that something about the genetics of the goldendoodle makes this “breed” more susceptible to detoxification problems when it comes to processing the product’s active and/or inactive chemicals to ready them for excretion from the system. Any chemical that gets into the system has to be detoxified or it builds up in the tissues and can cause such inflammatory and other detrimental effects when it does so, as can produce many of the symptoms I’m reading about wherever dogs have become sickened after this collar was put on them.

      In light of the foregoing, IMHO it is incumbent upon Bayer to immediately do the following three things if Bayer is not already doing them:
      — Keep track of the breed of all dogs whose owners call Bayer saying their dog got sick after use of this product, and symptoms/timelines;
      — Research immediately the possibility that certain detox pathways may not work as well in certain breeds as they do in some, and if it turns out this is the case, to publish and publicize this fact to all vets and perhaps in general circulation magazines in the mass media; and
      — Immediately place this information on the packaging of this product so that the public may be informed of the possibility such problems can occur, before laying out large sums of money for something that may kill or badly sicken their animals.

      As a comforting thought to Bayer:
      Yes, doing the above will likely cut into your profits in the short term. But the public relations value of doing what is ETHICAL and HUMANE even at the expense of your shortterm profits, may well end up, in the longer run, increasing them. With the widespread knowledge that you have merged “Monsatan” (as many call Monsanto based on the huge amount of damage their products, including GMO seeds, have done to our ecology and food supply) into your operations, you will benefit by all the goodwill you can validly accumulate, I predict.

      And while I’m dispensing free advice to this company, may I also humbly suggest that Bayer do something else that will make you a “hero” and which IMHO is the ONLY correct thing to do, ethically and, ultimately, public relations-wise, namely: Label as “GMO” all (the old) Monsanto products containing GMOs that you put on the market not only in Europe where I understand to do such labelling is required by law, but also in the United States where I understand it is NOT the law. Whether or not you believe that GMO is problematic, it is only fair to permit “informed choice” through labeling. You could put something on the package (if it’s true) to the effect of, “GMO has not been shown to make a product any less healthful than the nonGMO form of a product”, akin to how rBST-free milk now says a similar mesage about milk that has rBST vs milk that doesnt. But to try to hide from the public information about whether or not a product contains GMO, prevents people considering buying them from making informed purchases, and IMO and in the opinion of many others, this constitutes a hostile act against the public. CORPORATE RESPONSIBILITY, BABY! It equals good relations with your ultimate consumers.

      Greenie. After all, living in accord with Nature’s laws is the only sensible choice.

  97. Thank you for responding to this post….I was so upset that Bayer would not acknowledge that Lucy got sick from the collar. My Vet said that the do not allow the Vet. Office to carry these and there is not way to track the adverse reactions to this collar. He took Lucy’s blood and also kept the lot # off the Can..just in case they would contact him…but I could see clearly that they were not going to do that. It is very scary that they do not post the truth of this product so others can make clear decision whether to put this on their pets……I am glad that our babies made it through….and hope others will see my post when they are researching this toxic product.

  98. My friends dog has a Seresto collar for a little over a month and came in twice with a tick on him. Is it a defect?

  99. I have 2 small dogs and I bought 2 collars 52.00 each. I bought them in March and started using them immediately. Now it’s only may and I am finding fleas all over my 5lb dog. I am extremely disappointed in it’s performance. Suppose to last for 8 months. It’s only been 3. These are indoor dogs and although the do go outside they are not exposed to other dogs. I will not buy them again.
    Sylvia Frazier

  100. I wrote this review almost three years ago and didn’t realize it would become so popular and garner so many comments! Thanks everybody for taking the time to read the review and contributing your experiences regarding this collar. Just a couple of points to keep in mind based on the comments I am receiving. Every pet can have an allergic reaction to a flea and tick product, most don’t but some can regardless of the product. Unfortunately the few pets that experience an allergic reaction which can range from a skin irritation, vomiting, lethargy and in very rare cases even death. That is the case with all medications that your pet may need to receive whether it is for prevention of a disease or to treat a particular disease. Though you can’t prevent this you can minimize the most severe reactions by following these tips. Before applying or administering any long term flea product on your pet make sure they have a current physical exam. This may help determine if they have any underlying illnesses that can potentially make them more susceptible to side effects. When applying a flea or tick product for the first time on your pet, watch them closely for the next 7 days for any change in behavior or side effects. Only purchase products from reputable sources. There are a lot of counterfeit products out there that can cause great harm to your pet. If you believe your pet is having a reaction to a flea product take your pet to see your veterinarian. In many cases they can provide definitive documentation that the product was the cause of your pets illness. This documentation subsequently can be used for a potential reimbursement from the companies that sell these products for any treatment your pet may need. Hopefully these tips will help!!

  101. I bought this flea collar a month ago for my small dog. It worked for about 3 weeks and now she has fleas. The fleas are not around her neck area just around the bottom half of her. We treat our yard also! I have the collar tight and haven’t even let her get the collar wet! Frustrated!!

  102. We have an 8 month old yellow lab puppy. Our Vet office recommendef the Soresto dog collar. After 3 weeks of wearing this collar, he has developed a chemical burn around his neck. We took him to the Vet and they seemed shocked that this happened. I wish I were able to download pics to show how bad this was. I would NOT recommend this product. It is dangerous!! Check out reviews on Amazon, they have some pics of other dogs that got the same horrible thing happen to them.

  103. all my animals are wearing the seresto collars. I’ve found a total of 7 ticks on my dogs combined….and they were all hardened up and dead!!I have not seen any fleas. last summer i picked 10 ticks (at least) off of My long hair cat daily. This year none!! I am very impressed with this product!! Its a must in NE.

  104. My healthy 4 year old ridgeback wore this collar for a week and a half before he died. Prior to this he had routine blood work done and was in perfect health. The vet kept asking if our dog was poisoned. This collar killed my dog. I would never recommend it to anyone. He had no symptoms of being sick at all until 3 days after we used this product. Save your fur family and don’t use this.

    • So sorry to hear of the sad death of your pooch.
      Our lovely jack russel foxy was also poisoned by the collar. She had just had an annual check up and all was fine – after the collar she started to look spaced out couldn’t move and was severely unwell. She was going down hill and we thought we would loose her….. Luckily a friend suggested we remove the collar and she spung back to good health. I definitely attribute the whole experience to the collar and the poisoned symptoms. Such a horrible experience for the dog.

  105. I live in NC, coastal area. Have a 12 yr. male house cat, who walks on a leash daily (except now). He was on Advantage 2 until March 2018. It wasn’t killing the fleas, so I switched to Frontline Plus. Now Frontline’s not working. I last applied Frontline drops June 1. Then called Frontline Customer service, which advised me to put a Seresto collar on him, too. So I did on June 7 (one week after the drops). The fleas seem to be either drunk or dying. The Agent that I spoke with said it was o.k. to continue applying Frontline with the Seresto collar on. Isn’t this too much for my cat? Have I done the wrong thing?

  106. I found that FORESTO and SORESTO is said to be the same product just not with the reflector thingys. Is this true. Secondly, how can I tell if it’s the real thing or a knock off?

  107. I first used these collars on a dachshund and chihuahua last year and the collars worked wonderfully for more than a year. I bought four of them this year – 2 for mine and another 2 for my nephew’s large pit bulls. They work great and haven’t seen any kind of behavioral changes.

  108. Just moved to the country (in June) and our family dog (Staffordshire Terrier {Okay, shes a pitbull}) And is have been struggling to keep the fleas off of her. I applied Frontline the day we moved here, after she had a bath. Within a week, we started noticing fleas here and there around the house, and on her. I gave her a Capstar, hoping that would do the trick. Didn’t work. 3 weeks in with Frontline, 2 Capstars later, I finally decided to try Seresto. Prayyyyying this works for her! She doesn’t swim, doesn’t have a thick coat and doesn’t have skin allergies.
    I’m excited to see the results of this miracle collar. I’ve read nothing but GREAT reviews for it, and while it’s advertised in PetCo for $79.95, psssst – I got it on Amazon OVERNIGHT for $54.99 🙂

  109. I bought four collars a month ago one for each lab one for beagle and one for yorkie and now have fleas never had when animals were on oral flea med very disappointed to say the least!

  110. Dr Alleyne, what if a dog ends up trying to chew the collar off? Is there any way to secure the collar so this can’t happen? I have several dogs and only one that fights having a collar on. I ended up having to buy him a mans chain bracelet ( he is a chihuahua) in order to keep a collar on him. Also, do you know of any problems that have come up with dogs that periodically have seizures?

  111. I bought this collar for my lab puppy.Though the collar does work,I noticed she was losing hair on her belly.The vet (who sold me the seresto collar)said it was puppy pyoderma and also said it would show hair loss around the collar if it was the collar.Well……She took all her medicines and I applied the cream to the affected area and now she’s losing hair all the way up her chest to the collar!Needless to say I took the collar off thoroughly convinced it is the collar! Be wary of this product and the doctor getting kickbacks for each one they sell.

  112. Seresto doesn’t work for crap!! Atleast on my dog….she’s had it for approx a month and a half and has more fleas than she ever has! Will never buy that crap again!

  113. We bought 5 of these collars a little over a month ago at a cost of about three hundred dollars, and they didn’t help our dogs at all. They have as many fleas now as the day we put them on.
    I want a full refund for this useless collar.

  114. I bought 5 of these collars at a cost of around 3 hundred dollars, and they didn’t help. Our dogs showed NO less fleas weeks after we put them on. THEY’RE USELESS.
    I want a full refund.

  115. Love, love, love the Seresto flea collar for my cat Jack. I was using the Advantage liquid on the back of the neck. Seemed to be ok, however he still scratched. Then two weeks after i gave him the Advantage my entire apartment complex was infested with fleas. It’s summer and very hot so they are breeding. Jack was covered in fleas even using the Advantage. He was miserable, and biting chunks of his fur out. Purchased the Soresto collar and after putting it on him fleas were literally jumping off his body. with a few brushes with a flea comb and 24 hours later i have not seen 1 flea and Jack is super content❤️❤️ ~ Sharon

  116. My dog got sick within few hours of having the collar on it, it got a high fever and unusual body moments and got very weak. I suspected the collar as the reason and have removed it immediately, soon after few hours my black female lab was active and ready to play with us. It might be specific reaction to a breed or geography, but as a pet lover I would never take chances and would never recommend a medicated flea collar.

  117. I have Newfoundlands and they have a thick coat, will this be effective for them since they are allergic to fleas, one flea sets their skin into a frenzy and they bite them selves and have huge sores

  118. The collar had negative effects on my 7 year old 65 lb malamute/samoyed/ white shepard mix. She was lethargic and not well while wearing it. My 12 year old 30 lb lab/mix began pulling her hair out in clumps and was in distress, she is still recovering.

  119. We used this product on our dog. Within 24 hours she was having store like symptoms. Balance issues, seizures, etc. After removing the collar she was back to her normal self. We called Bayer to alert them after noticing more people had issues and had posted online. Almost one year to the day, her symptoms came back though not using g the collar anymore. She passed away within a week and we believe the collar was to blame.

  120. I bought my first Seresto collar a couple of years ago. Loved it. I was living in Ohio at the time. I moved to an area that I knew it had flea and tick issues. I never saw one flea or tick on my dog.
    I bought a substitute collar from my local Walmart. It looked the same and actually repelled them just as great. At a much lower cost, this product came with two collars, but didn’t provide the longer term effects that Seresto provides.
    I moved to Florida and the cheaper collar became non-effective immediately.
    The first thing that I did was to spray a natural flea killer on everything in the house. I tried topicals, oral, bathing her in Dawn, nothing worked.
    I went back to the store and got the Seresto. Bam! The fleas are not on my dog anymore!
    I know that each product is different and so are the animals that they work on. This is the one I will stick with because I have had the best experience with it

    • I find your review very helpful Connie. I feel terrible for all the poor babies that had a reaction to this collar. I have a beagle mix he is about 65lbs I tried the topical treatments not the cheap ones Advantix and so on they made him sooo sick he threw up within a half hour of it I scrubbed as much as I could off and he did get better but I’m sure had a sick belly for a while I have had no reaction at all to this collar.

      What people don’t understand is dogs and cats are like people no 2 have the same makeup. My girlfriend drinks green tea like crazy if I drink it I will vomit within 30 mins I can not tolerate it!!

      If you try anything new on your pet don’t do it and go out do it in closely monitor your pet for at least 5 to 6 hours to make sure there are no adverse effects if there are simply remove the collar or call the manufacture! I just put a new collar on my dog not more than 30 minutes ago and he’s running around jumping like he’s a puppy and he’s 11 years old but he is not Cec and I would not recommend putting any harsh chemicals and they are harsh I don’t care what the manufacturer says on a sick or Alan dog or cat! I hope that the medicine doesn’t work because he suffering terrible with these fleas!!

      He caused A bald spot to himself from biting and scratching the fleas so you do have to make sure the what you’re saying is true! I wish everyone the best luck!!

  121. The collar totally SUCKS MY DOG IS EAT UP IN FLEAS AND HE LOOKS AWFUL EVEN AFTER WEARING THIS COLLAR. he is an inside dog NOT worth the mooney you spend on it!!!!!!

  122. All 3 of my dogs use the 8 month collar. They have never had fleas or ticks. My dogs are 4years old, 3 years old and 8 months. Best investment ever. If a pet had died, get the facts from your vet and stop blaming a damn flea collar

  123. My 5 german shepards need flea and tick protection and after doing a bit research me and my mom saw very horrible reviews on it. Some die and some have bad allergic reactions to it, is this really a good collar to get?

    • Put this Seresto collar on my 8 yr old German Shepherd, after 3 days of wearing the collar he was scratching his neck like crazy- finally took it off. After inspecting his neck he had a red raw area half way around his neck. This collar is dangerous to certain breeds. Customer support was of no help. They offered half refund but this will not help the $200 vet bill. Stay away from this collar if you love your pet. BEWARE!!

  124. Bought a Seresto collar for my small rat terrier who is an inside dog. Have used Nexguard for 2 yrs it worked well but was hard to keep up with dose dates. So I bought the expensive collar. Worked for 3 weeks then boom my poor dog is in misery with fleas. Not only that we now have them in our home!!!!!

  125. This OVER PRICED flea collar DOES NOT WORK. We got it through chewy.com had to get it replaced STILL did not work. Called seresto directly and got a bunch of bs.
    54.00 stolen from us.
    DO NOT WASTE YOUR MONEY

  126. This product is a whole lot worse than other Flea products. I put one on my 2 yr old dog and i found flees on her. She would cry and dig, cry and dig alot more than my other dogs that did have other protection. I would not recommend this product at all.

  127. We got Seresto collars for our three pitbulls about a month ago. Ka-Ching!
    They seem to be effective for flea control, so that’s good.
    The only complaint that I have about this collar is that the plastic material is soft and stretchy. I found one of the collars in the kennel with the retainer end broken off so it won’t stay tight any more. I put it back on the dog and fed the end through the two guides and wrapped some duct tape around it where it overlaps. I guess I can replace the duct tape as needed for the next 7 months. I don’t really buy the claim that it’s designed to break away in the event it gets caught on something. Their regular collars are heavy nylon like seat belt material and have no give whatsoever. The dogs have not gotten those collars caught on anything and strangulation seems like a remote possibility. Is Bayer intentionally making these collars fragile so we’ll need to buy another one before the 8 months are up?

  128. This flea collar does not work it attracts more fleas I used it twice i the 1st one I thought maybe it have to get in her system or something I got another one a few months later the flea was bad she had all the flea and my cats had non and I had them on a pill mybfod started having a reaction losing hair once I took it off of her and a few bath and I put her on the same brand of pill I do my cats and she is much better it it’s been two weeks smh don’t buy

  129. I bought this collar today, September 25, 2018 I had it on my dog for only three hours after reading the reviews and reviews on different websites I took it off him. I am scared to use it. My dog is a small toy poodle only 5 pounds I don’t want him to get sick or have neurological problems or seizures this doesn’t sound like a solution if the majority of the reviews have had negative experiences with this product. My dog is only 3 years old and we have always used Avantix without a problem. This year for some reason we had a flea problem and it got into the house. Never had this before. So, Our usual treatment wasn’t working so I bought the collar. Tomorrow I will go and return this product and look for the drops again. I have read so many reviews and feel just awful for all the folks that have had bad results and expensive vet fees due to this product. I don’t want my dog to change or be changed he is a wonderful playful young pup and from the sounds this collar would change who he is or potentially hurt him. I have a friend who has a cat and a dog and has never used any kind of flea medicine at all and does not have a flea problem and her animals are just great. Sorry, this hurt so many animals. I will not be using this product.

  130. Put this on my dog 3weeks ago. 10 days ago I had to take him to the vet with vomiting diarrhea and he wasn’t walking good and very tired. He stopped eating as well. The vet ran tests and couldn’t find anything. After 4 days he finally perk up. Then 2 days ago it started again. The only thing that changed for him was the seresto collar. he didn’t eat at all yesterday so today I took the collar of and he is getting a lot better. It took me awhile to figure out the collar and it surely will never be on him again. $54.00 for the collar and $350.00 for the vet an expensive lesson. I have a 14 yr yorkie

  131. I’ve had the Seresto collar on my dog now for about 3 weeks and I am still seeing the same amount of fleas on her if not more.The collar to me is not working. I now have to spend money to have my house treated. It says it repels fleas and kills which is not true.I will not use this product again or recommend to any one.

  132. I had a Yorkie and the collar worked amazingly. Now we have a golden doodle and it isn’t working at all. I have taken it back and just got a replacement. Still having flea issues around his rear end area.

    Dog was gone from end of November to middle of December. No issues in house.

    Have treated dog with bathing, sprayed yard, and sprayed baseboards of house.

  133. Animals are similar to people in that some of us are allergic to various foods like peanut butter or shellfish, while others are not. We don’t all stop eating peanut butter and shellfish because a few people had an adverse reaction to those foods. Likewise, just because one animal has an adverse reaction to a flea & tick medication doesn’t mean we should all steer clear of it.
    I put the Seresto collar on my cat and by morning I found dead fleas attached to him. They had died while they were sucking blood, it had started working immediately. My cat has a flea allergy. Even though the fle dies, if it has had a chance to bite him, the cat will react to flea saliva. The Seresto has diminished the flea population and helped him greatly.

  134. My 10- year old neutered rescue water spaniel mix has always been sensitive to topical products for fleas/tick s becoming very agitated , foaming at the mouth almost going into seizures. I thought I had found and answer when we heard good reports on the Seresto collar. For two years he wore the collars with good results. We live in an area with heavy flea/tick population. Removed his Seresto collar at end of winter. This spring as weather began to warm put the Seresto collars on our dogs( the second is a 3yr. Jack Russel/Chichuachua Mx). Within 3 days Storm was no longer sleeping at night, pacing the floor, drooling, anxious appearing to have symptoms of canine dementia. By process of elimination and having many years of dog experience the collar became suspect. The collar was removed, both dogs thoroughly bathed and the dog beds are being washed and aired. The smaller dog began to scratch as if being bitten by fleas and I then removed her collar before the older dog began having problems. I am sorry to every person I recommended this collar to. Can anyone suggest something I can use on Storm that will harm him? Do not want to have to quit walking our dogs. Sorry for causing my dog such horror and pain. 71 and so sorry!

  135. I paid almost $60 for this collar 3 weeks back. I still have to bath, my beagle
    He is an inside Dog, goes out for short periods of time. Still has fleas. I do take off collar for baths and put it back on. He Scratches is constantly . Very dissatisfied, due to its price I still will need to buy other products

  136. Just put collar on dog today she’s been scratching ever since. Hope will stop. I seen most all bad reports on this. I saw one good report. Must be more??

  137. I have a Pomeranian who is allergic to everything including fleas will tear out his fur, Ive taken him to his vet and have tried the chews, drops and many other treatments, many, many of them he was allergic to and would itch after each treatment of chews, so 2 years ago decided to go with the Seresto was a little hesitate how it could last 8 months, just ordered my 3 rd one this really works, yes there are side effects but all the others have side effects also, Seresto has worked the best out of all the treatments Ive used and my boy has been a flea free Dog for 2 years no having to take him to vet for skin treatments , prednisone, antibiotics, due to fleas , This product has been a life changing event for both me and my Harley , He had no side effect at all.

  138. Seresto collar #1: great job! 7 months later, Seresto collar#2: awesome! 7 mo this later & 2 months into Seresto collar #3: I’ve tried everything to get fleas off of my dog, off of my guests, out of my house & have spent an exorbitant amount of money on natural flea killers, 2 other brands of fleas and a popular dish liquid. Fleas have infested my couch and other furniture and apparently every nook & cranny in this house. The collar hasn’t come off, and fleas crawl around it! My poor dogs rear leg is raw from the fleas and her chewing. What happened? The collar is not out of date and I’ve done nothing different. My next step will be an exterminator & medical attention for my dog. I’m so disappointed & running low on funds to fix this problems.
    Solutions, sugggestions Seresto?
    Once a 5 star now a warning to others…

  139. My 6 yr old Pit Bull is wearing his second
    Seresto collar and I couldn’t be happier. No
    fleas, no ticks, no “itching” or skin conditions
    noted since he began wearing the collar. I buy
    his collar from his veterinarian and highly
    recommend it.💖

  140. I have one small Yorkie/terrier mix (16 yrs. old) and 7 cats (all around 5.5 yrs. old). The cats are indoor animals; the dog goes out in the backyard to potty but stays indoors, too. But she would go outside, just long enough to get loaded with fleas, come indoors, and share them with the cats and house. They all went through almost a year of misery–bad bites, lumps, scabs, itching, hair loss. It was awful! I tried everything I could find–the liquid applications, collars, powders, shampoos. And I was miserable trying to fight a flea infestation in the house! Nothing seemed to help. I finally made my way to Seresto collars. Like a miracle, the collar really helped my dog–I tried her first. When she seemed to be having good results, I got 3 collars for the larger cats–then eventually for 2 more. This home and its residents have been virtually flea-free–for about 4 months. But they’ve suddenly started scratching again. Seems these pricey, 8-month duration collars are dying after 4 months! Not at all happy. Granted, my “kids” have been misery-free for awhile and their peace and freedom from flea bites is pretty much worth any price. But my gosh, for 1 dog collar and 5 cat collars, I practically have to 2nd mortgage my home. Either these collars need to last the advertised 8 months, or the price ought to be cut in half.

  141. I’ve just received two of my seresto Bayer flea collars. It has not been 2 hours yet. Although, my papillon who does not have a whole bunch of hair I’m still finding fleas attacking my little baby girl. I also have a teacup chihuahua who does not have a lot of hair and she’s had her collar on a little over an hour as well. I am waiting to see my Bayer seresto flea collar Kick-Ass. I’ve also been waiting for an untimely weight for my German shepherds to arrive. I pray to God that these collars after spending so much money bombing sprays topicals you name it work on my pets. As they are our family as well. I will keep everybody posted and whether or not the fleas are still out of control and don’t care about the flea collar and they’re going to continue to drive my dog’s crazy as well as Mommy and Daddy. It is such a sad situation I honestly don’t know if the good Lord would have created such a blood-sucking worthless no good insect and put it on this Earth. Whatever the reason fleas are here for I don’t use the word hate often but I will tell you I hate fleas and so do my dogs. So let’s all keep our fingers crossed that soon at least my two little ones will have no more fleas and soon my shepherds will arrive. Unfortunately some people through eBay love to take their time regardless of your situation. Fingers crossed prayers please.

  142. I’ve always used Frontline on my cats. Vet suggested your flea collar to be cheaper in the long run. I bought 2 from Amazon. My cat has worn it for about 6 weeks now and unfortunately now has fleas

  143. We have been using seresto for our Springer doodle. What a great product works wonders for us. Have not had any problems. It’s nice to just put on the collar and let it do its job for eight months.

  144. my poor puppy (4 months old) gets walked and kept getting infested with fleas on every walk….it was recommended by a friend to get the Seresto collar….it’s been on him 12 hours and he is playful, happy, and hardly scratching….I’m just hoping that the flea which was 1/2 dead walking on me didn’t lay eggs in my couch already …my other dog (9 lb chihuahua) seems to be getting lethargic since I put it on her last night and she’s still scratching like crazy….I’m happy for my puppy but concerned for my chihuahua.

  145. Love, love this collar. I found cheaper ones bought 2 and they didn’t look right, purple in color, so called company and they were fake with Bakers name on it. Got moneyour back, and bought from Chewy.com

  146. You have recommend in great detail about flea collar. Your post was very useful for me and it was a pleasure reading your post. I also the way in which you have presented this article. Your article is short, informative and yet very detailed. Thank you.

  147. I bought seresto collar
    It has not worked at all it has been on my dog for four and a half days. I’m I look tonight and the dog is covered in fleas. Very disappointed for spending so much money on nothing

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