Seresto (seresto.net.cn) has a 1.8 out of 5 rating on OK.one, based on 55 user reviews collected here. It is listed under Animals & Pets and its reputation is poor. 76% of reviews are 1 star, a relatively high share; The business has not yet replied to negative reviews; 17 of them were added in the last 12 months. Last updated 2026-10-24.
Do NOT buy this collar , I paid £35 for it , my dog ended up having seizures , which he’s never suffered with before . Couldn’t pin point straight away , until I realised it’s the collar, took it off him and he’s been fine ever since. Do not poison your pets . Just go to a vet instead
Bought from Amazon and 8 weeks in my dog has fleas …. So called protects them it’s a sham I’m so disappointed
Bought all 4 dogs seresto collars from vet and they have only lasted not even 2 months! This company needs to be shut down!For the price,it is not effective!! Want to spread the word and hope this company ends up closing! Worthless!!!
I used to swear by these. I dont know if they've changed but the collars we have purchased this year are worthless. How is this product effective if you see fleas crawling around on the neck where the collar is placed. In the past I loved these collars. Now they are a waste of money! DO NOT PURCHASE!
Don’t waste your money, doesn’t work, no facility for refund!
Do not purchase Seresto collars for your pets! I repeat, do not purchase Seresto collars for your pets. They are poisonous. I spent almost $400 for 4 collars- 2 for my dogs and 2 for my cats. My cat had a severe allergic reaction . She was throwing up for days and I did not think it was because of the Seresto collar. I took her to the vet and $900 later they told me she had gastritis. I brought her back home and she kept throwing up. It wasn’t until I realized that she had lesions all over her neck that I thought to myself it must be the collar she has not been the same since. The collar came off, but now I have to bring her back to the vet to take care of the lesions.
If I could give zero stars I would but I bought 2 of these for my indoor cats because my dogs go outside and and incase they bring any nasties in with them and they have given both my cats chemical burns round where the collar sits I am soo soo upset 😪 after 3 days of wearing the collar
I have used Seresto collars on all 4 of my dogs for several years with no issues and no fleas or ticks. I do check my dogs neck daily for irritation but have never had an issue. Please make sure you buy it from a vet or pet store. Make sure it’s not an imitation!!!
Elanco has recently taken over for seresto collars. My problem has never been with the Seresto collars which have kept my dogs safe, healthy and tick/flea safe now for over ten years. This new company Elanco based out of Germany has zero customer support. as there are many kock off's today I questioned one purchase of a seresto collar. Back when Bayer was in charge their customer service was A1, but with these people at elantro one can forget any customer service for seresto collars anymore. very sad, very unfortunate that the company DOES NOT CARE ABOUT OUR FAMILY MEMBERS
We have spent 200 dollars treating our cats. After three weeks. Multiple treatments with bravecto and capstar .we also washed our cats with flea shampoo. Do not buy this product. Had to postpone my placing cats in cattery because they were flea ridden . I demanded my money back. There is no way that it works effectively as a slow release for 8 months. An absolute rort
PLEASE DO NOT BUY THIS PRODUCT!!!. Like so many others, I was attracted to the 'recommended by vets' claim on Seresto's ads. With hindsight, I defy you to name ONE vet who recommends them. But when you are desperate to help your pet, it is so much easier to be fooled. Sadly, my beloved cat Freddie died from a reaction to wearing the collar for only two days two weeks later. I quote Seresto... "There is no established link between death and exposure to the active ingredients contained in Seresto". So why is my previously very healthy, sadly missed cat no longer with us after using your collar?. Come on, UK Government...please outlaw it NOW!!!
I put the collar in my 9 month old cat 5 days later he died instantly no symptoms I buried him 30 minutes ago. Then I find all the bad reviews. Don’t chance it, it’s not worth it.
The small dog collars are too tiny, they wouldn't fit a small cat, let alone any small dog. I did call and speak to a customer representative who simply said buy the bigger collar which is for a weight of greater than 18 lbs. That's is not what is needed!!! You people need to make the small dog collars longer! Putting a large collar on a small dog is not logical. I have pekingese who have a larger next size. These small collars would hardly fit a cat!
I bought three collars for my pets. They claim to kill fleas within 24 hours.. They did absolutely nothing to help my animals.I spent over two hundred dollars on a terrible collars. DO NOT BUT WORTHLESS!! When I try to contact the company through through their customer support , It states that all of their vets are busy in a meeting right now and to call back. I've been calling everyday they are liars
Bought a soresto dog collar from pets at home less than a month ago and found fleas on my dog 2 days ago . We had eliminated all fleas 4 weeks previous with medication and then used the soresto flea collar . This cost £40 and was absolute rubbish
Ok,Seresto, what's up?? I've used these collars for flea tick control for 4 yrs on my highly allergic( to fleas) PitBoxer and rescue kitties...Never a prob..worked great .no fleas for. 8 months+no ticks. Not So This Time. Walmart returned my money( I thought they were imposter collars..then Re bought at Chewy.com..same issue..NOT WORKING AT ALL.Fleas all over dog n cat..bad infestation with scabbing and constant scratching so pets are miserable. These collars are like placebos, what have you done? I know in the South US (NC) we have fleas overload, but Seresto has controlled that every year but this year. My whole house has fleas( thanks a lot Seresto) while I'm trusting the collars to work per usual. No! I have 2 miserable pets (cat doesn't go out, dog just to toilet)and now I need to de-flea house, beds and myself and disabled teen... despicable. What have you done, changed the formula, using less potent ingredients, using way less of core ingredients?? Please do tell? I see I'm far from the Only customer who's been ripped off and now dealing with 2 miserable pets and 2 humans with fleas. You truly need a court case at this point Seresto..the public are tired of scams while we are just trying to get by with our horrific economy..A once Great product, Now..USELESS, AND WASTED MONEY HARD TO COME BY. SHAME ON YOU, YOUR COMPANY AND WHOMEVER IN CHARGE, CHOSE TO SCREW UP A GOOD THING.
Bought 3 seresto collars especially for our holiday all my dogs came back with a load of ticks, will not be buying again
For a number of years I've used Seresto for my Australian Labradoodle but for some reason it doesn't work anymore. It's as if the fleas have become resistent to the product. I normally buy a new one every 6 to 7 months but as she kept on scratching, I bought her a new one last month. However, both my dog and my house are covered in fleas. No more Seresto for me.
My dogs were picking up several ticks on every single walk and we were finding them in the house. We also had a major flea issue last year too, despite regular flea tablets, and had to flea bomb the whole house to get rid of them. So we bought these collars 2 months ago and there has not been a single tick since! And as the weather warmed up we didn't see any fleas either. Definitely works well for my spaniels!
This is the 3rd year using the collars. We have 3 dogs and 4 cats. This year we've bought 2 for each animal thinking the 1st was a bad batch, but the 2nd collars didn't help at all with fleas either!!!! Very disappointed considering the money that's been put into these and them not work!!! What changed? 😧
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