Seresto® Flea and Tick Collar for Dogs

Item #0040921



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Seresto® Flea and Tick Dog Collar is the new alternative to monthly topicals. Non-greasy, odorless, easy to use and water-resistant. Flea and tick control that lasts up to 8 months in dogs. Read More

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Featured Advice from Our Experts


Canine Wellness Series - Part 1 - Fleas

Depending on where you live, battling fleas (and all the problems that they bring with them), never really ends.  Keep in mind that treating your pet is just one step in winning the flea war.  Treating your home and yard is absolutely essential.   With the marketplace full of products that all claim to be the very best at controlling and killing fleas it’s important to use what works best for you, in your area...


The new alternative to monthly topicals. Flea and tick control that lasts up to 8 months. Seresto, from the makers of Advantage II and K9 Advantix II.

  • No need to remember monthly applications.
  • Non-greasy, odorless, easy to use, and water-resistant.*
  • Active ingredients imidacloprid and flumethrin provide dual action against ticks and fleas.
  • Bayer’s Polymer Matrix is designed to slowly and continuously release the active ingredients for 8 months.
  • REPELS ticks on dogs. If a tick is repelled or killed, it cannot attach to a dog. If a tick doesn’t attach, it can’t transmit organisms that may cause disease.
  • For use on dogs and puppies 7 weeks and older.
  • Includes optional reflector tabs that can be attached to collar for safety at night.
  • Small dog collar has "break-away" notches for safety.

Small Dog collar is approx. 15".
Large Dog collar is approx. 27.5".

* Bathing or swimming more than once a month could result in a shorter active period for the collar.

View manufacturer and/or label information


  • Brand: Bayer Animal Health
  • Type: Flea & Tick
  • Form: Collar
  • Dog Size: Small Dog (under 18 lb), Large Dog (over 18 lb)

Reviews (13)

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  1. 5.0 out of 5 stars

    "I heard about this product from my vet"

    I heard about this product from my vet. Cringed at the price BUT we put it on my cat(at the vet, had an appt AUGUST) who was loaded with fleas(in 16 yrs she has never had them or very few, house cat) By the time we got home (30 Minutes) she had stopped scratching. SHE Is still wearing it!!!!!

  2. 1.0 out of 5 stars

    "Poor Quality"

    purchased from vet with the promise of no ticks for 8 months (give or take) but would have been happy to make it until September. On in May with 1st tick removed June 10. Shocked that Bayer produces this inferior product. Prevent Tick works and this junk has been replaced for $13 - old faithful!

  3. 1.0 out of 5 stars

    "more expensive is not better"

    i thought buying the most expensive collars would put my mind at ease with the fleas on my 4 dogs.they never had them that bad but didnt like doing the drops every month or trying to remember the date to do them so i decided to go with the collars that would last up to 8 months.purchased them around march started seeing my dogs scratching in may gave them a flea dip thinking the collars had not kicked in yet saw my older dog who is 14 losing her balance alot so checked her again and she was covered again in fleas really bad this time my fault for not checking my dogs more often. it was a 256.00 mistake for believing what i read. ive removed all collars from my dogs they are no good and will not purchase anything like this again to bad they dont have a refund on these types of things i feel they owe me my money back

  4. 1.0 out of 5 stars

    "not good"

    I bought this collar from our Vet. I put it on our 4 month old Yorkie one evening and the next morning she was really sick. She threw up 4 times, wouldn't eat, and was lethargic. We took the collar off and the next day she was better, no more throwing up.

  5. 5.0 out of 5 stars

    "great results"

    Worked for 8 full months on my Brittany, even durring hunting season where he was wet at least twice a day. Ordering a replacement as this one is now almost 10 months old.

  6. 5.0 out of 5 stars

    "amazing product"

    I have13 dogs. I have always hated flea collars but after my vet told me about these I thought I would try them. So glad I did! After adding up the savings of these versus topical treatment I saved a fortune. The best part is my dogs and house are flea free!! My dogs coats are softer andthe few that had flea allergies and were losing hair now have their fur back! No more digging and scratching. Will definitely reorder in a few months! Love them and so do my babies!!!

  7. 3.0 out of 5 stars


    Overall easy to use! I bought 04/24/13 my dog had fleas on 09/27/13 worked for 5 months.

  8. 5.0 out of 5 stars

    "not 4 every dog"

    We live in the middle of the Great Smoky Mountains and the fleas & ticks are abundant. However the Seresto works great, no fleas no ticks and no side effects. Our dog is a short haired Lab-Terrier mix, 3 months on and the prevention is great.

  9. 5.0 out of 5 stars

    "Awesome "

    I got this for my 2 cats best thing ever! No fleas, they don't scratch anymore. Took one cat a few days to adjust to having a collar on. My mom is going out and buying 2 for her cats. Both of us are very impressed. Still have 5.5 months left but so far so good

  10. 4.0 out of 5 stars

    "Working on 3 Dogs!"

    I have bought 3 Seresto Dog Collars. 2 were put on Jack Russell Terriers and 1 was put on a Rat Terrier. I put the product on in the Middle of March and there haven't been any fleas or ticks on any of the dogs. The collar is a little strange in the design. But the collars have already paid for themselves since I haven't had to buy monthly flea & tick applications.

  11. 1.0 out of 5 stars

    "no quality"

    this collar is made from cheap material. split around the tab after 3 weeks - now it is torn into. impossible to contact manufacturer - push buttons and hold - after 20 minutes. i gave up. a total waste of money.

  12. 4.0 out of 5 stars

    "Great so far!"

    We bought a rat terrier puppy & could not keep the fleas off of him. We treated the yard & used frontline & Adams spray & he still had new fleas everyday. We bought this product from the local pet store & within two days he was flea free. The only reason I didn't give it 5 stars is because he's only had it for a month so I don't know if it last as long as they say.

  13. 1.0 out of 5 stars

    "dont buy"

    This collar was placed on my dog after 2 weeks ,she would not eat. And would throw up her food. Took it off and she was able to keep food down after the day.

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