Seresto Flea & Tick Collar for Dogs

Item #0040921


Seresto Flea & Tick Collar for Dogs

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Seresto Flea Collar for dogs 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. Read More

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Seresto Flea & Tick Collar for Dogs

The new alternative to monthly topicals. Seresto kills fleas within 24 hours and ticks within 48 hours after initial application. Re-infesting fleas are killed within two hours and re-infesting ticks on dogs are killed in as quickly as six hours.As the active ingredients wear off the dog or cat over time, Seresto replenishes the hair and skin with a new supply of active ingredients, providing continuous protection against fleas and ticks for eight months.

The Seresto Dog Collar repels ticks, preventing the tick from attaching and transmitting disease-causing organisms. Bayer's Polymer Matrix is designed to slowly and continuously release the active ingredients (imidacloprid and flumethrin) for 8 months. Includes optional reflector clips that can be attached to collar for safety at night.

Seresto Features & Benefits:

  • no need to remember monthly applications
  • non-greasy
  • odorless
  • easy to use
  • water-resistant*
  • repels ticks on dogs and prevents diseases
  • for use on dogs and puppies 7 weeks and older
  • small dog collar has "break-away" notches for safety
  • includes optional reflector clips for visibility at night

Small Dog collar is approx. 15" L (for dogs up to 18 lb)
Large Dog collar is approx. 27.5" L (for dogs over 18 lb)

Active Ingredients: imidacloprid and flumethrin

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

View manufacturer and/or label information

Learn how to apply Seresto to your dog:

Not eligible for multiple discounts!


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

Reviews (38)

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  1. 4.0 out of 5 stars

    "It works but not as fast as they claim."

    The first 4-5 days the dog was wearing the collar - I was still seeing fleas on the dog and even right under the collar. They were lethargic fleas - but alive. It has been three weeks now and I can't find any more fleas alive or dead and my dog is not scratching anymore.

  2. 5.0 out of 5 stars

    "Works great"

    I previously used flea and tick spot on from the veterinarian, but it got so expensive and the dogs and cats hated it. I just bought my first Seresto collar and it works great and my dog didn't hide from it! We live on a farm and it works great even with them going in the tall grass fields and woods.

  3. 1.0 out of 5 stars

    "Carlos "

    No Flea month! Two month - fleafleaflea.

  4. 5.0 out of 5 stars

    "So happy"

    I love these..I use to swear by frontline but I guess there were never fleas around. Everyday my dog had more on him so I bought this. After 2 days no fleas. I am so happy with these collars. I got another dog and the first thibg I did was order one for him. The price is very good too

  5. 5.0 out of 5 stars


    I previously used flea and tick prevention I purchased from my vet but the cost was getting too expensive. These collars work. I live on a farm and my dogs are always in the woods or in the fields. No fleas or ticks!

  6. 5.0 out of 5 stars

    "Seresto Flea and Tick collar"

    I have 5 large dogs that stay outside and run in the woods and tall grass. We live on a farm and this is the best thing I have ever found. They kept all my dogs tick and Flea free for a year!!!

  7. 5.0 out of 5 stars

    "good collar"

    Our poor guy was chewing himself raw , it did take longer than 12 hours to kill them but he is now bug free and a happy camper Thank You Bayer for Seresto ! and thank you to Jeffers Pets for prompt service !

  8. 5.0 out of 5 stars

    "Fleas No More"

    Hands down the best flea control around. Worth every penny and then some. And Jeffers has the best prices around. Run don't walk to Jeffers and get some NOW!!

  9. 5.0 out of 5 stars

    "Best flea and tick collar!!"

    I have 4 dogs on a farm without any fleas or ticks! Love these collars and Jeffers saves me money on them!

  10. 5.0 out of 5 stars

    "We have 12 dogs "

    And everyone of them has this collar on. We live on a active farm right close to a heavy tree line. We had a flea infestation last year which a company treated for us and this year we tried these collars. So far so good! I bought them in March and not the first flea. My dogs are hard on their collars and they have held up to swimming, ruff housing, dirt, you name it. Our Malinois, border collies and German shepherds ARE HAPPY & FLEA FREE! Worth every penny we spent.

  11. 5.0 out of 5 stars

    "works better than any spot on i've tried"

    I'm not too thrilled about my dogs wearing collars for 8 months out of the year, and neither are they, but the seresto has kept both of my farm dogs flea and tick free for the last 2 years. Any ticks I've seen have already died. It does give use peace of mind, although I wish it was a little lighter for my JRT and a little thinner overall. Worth the $.

  12. 5.0 out of 5 stars

    "Flea Free for 6 months"

    I will take it! Nothing worked before we bought these collars. We had absolutely no fleas for a solid 6 months. YEA!

  13. 5.0 out of 5 stars

    "Very pleased!!"

    Have purchased 3 of these collars. They work great! No fleas or ticks. Will purchase from Jeffers again. Very prompt shipping and the customer service is exceptional!

  14. 5.0 out of 5 stars

    "Great product! "

    Bought 3 large and 1 small. Live on 18 acres, dogs have no fleas and ticks. A friend of mine that works at vet office recommended these. Saved a lot of money with Jeffers!!!!

  15. 5.0 out of 5 stars

    "works great"

    put is on my 9 week old border collie and by 24 hours the fleas were just falling off

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