• Protects for 8 Months

    One Seresto collar kills and repels fleas and ticks for 8 continuous months.

  • Works Through Contact

    Seresto kills fleas and ticks through contact, so they don't have to bite your pet to die.

  • Easy to Apply

    No messy monthly treatments here. The Seresto collar is odorless, non-greasy and protects for 8 months.

  • No Prescription Required

    The longest-lasting flea and tick protection* is available without a prescription. *Based on label claim v. AOC, as of 3.9.2023

    Clinical-Strength Protection

    Recommended by vets. Hated by fleas and ticks. Seresto gives your dog or cat 8 months of hassle-free defense.

    How Seresto Works

    The active ingredients (Imidacloprid and Flumethrin) are stored in the collar’s polymer matrix and released over 8 months.

    No other flea and tick collar has this combination of ingredients.

    About Seresto

    Seresto is the #1 veterinarian-recommended* flea and tick collar, providing up to 8 months of continuous protection for your dog or cat. Its unique design releases two active ingredients—imidacloprid and flumethrin—to effectively kill and repel fleas and ticks through contact. It’s clinical strength flea and tick protection without a prescription.

    *Data on file. Elanco Animal Health

    Ultimate Flea and Tick Protection with Seresto

    Seresto offers top-tier flea and tick prevention for pets, combining convenience and efficacy in a water-resistant collar.

    Trusted by veterinarians, Seresto delivers up to 8 months of continuous protection, ensuring pets remain pest-free and comfortable.

    Choose Seresto for long-lasting, hassle-free care that keeps pets happy and healthy.

    • ★★★★★

      As a pet owner with indoor-outdoor cats, I’ve struggled with flea and tick infestations due to the neighborhood strays and dogs.

      Traditional flea collars often left an unpleasant odor, but this collar is a game-changer! It’s completely odorless yet incredibly effective, eliminating every single flea and tick within just a couple of days. My cats no longer suffer from irritation, and the collars last an impressive 8 months.

      The best part? No more dealing with messy topical treatments that my cats despise. After years of trying different products, I’ve finally found a reliable solution that keeps my furry friends comfortable and pest-free.

      Emilie Santana

    • ★★★★★

      This flea collar has been a game-changer! For years, I struggled with fleas invading my home and tormenting my furry companions. But since using this collar, my dog has been flea-free, even during our adventurous camping trips. The instant relief it provides from scratching is remarkable. While occasional neck irritation occurs, removing the collar for short periods resolves it.

      I’m impressed by its effectiveness, especially considering my yard’s flea-infested environment. If it maintains its potency for at least six months, it will undoubtedly be worth every penny spent. So far, this collar has exceeded my expectations, and I couldn’t be happier!

      Rory Wallace

    • ★★★★★

      The lightweight, adjustable design ensures a comfortable fit without irritation, and the lack of overpowering smells or greasy residues is a welcome departure from traditional products.

      While results may vary based on your pet’s size, I’ve witnessed remarkable efficacy across dogs ranging from petite to behemoth breeds. The longevity of these collars is equally impressive, lasting well beyond the advertised duration.

      Undoubtedly a worthwhile investment in your pet’s comfort and well-being, I wholeheartedly endorse it to anyone seeking respite from parasitic pests.

      Ruth Wilkerson

      Seresto® for Cats and Dogs

      How do Seresto ® collars for dogs work?

      The Seresto® collar works with a patented polymer matrix of two active ingredients, which spread from the site of direct contact over the skin surface of your dog:

      • Imidacloprid has been used in products for years to control flea infestations.
      • Flumethrin effectively kills and repels ticks.
      • Flumethrin works together with imidacloprid to provide dual action against fleas and ticks. No other product has this combination of ingredients.

      Sustained release technology

      Seresto® works similarly to a monthly topical in the fact that the active ingredients spread from the site of direct contact over the skin surface. The active ingredients in Seresto® are released in low concentrations from within the collar and, thanks to your pet's skin and coat, spread from head to toes, even the tail. As the active ingredients wear off over time, a new supply is continuously replenished in low concentrations for 8 months. The long-lasting, 8-month duration of Seresto® differentiates it from other flea and tick collars.

      Do Seresto® collars for dogs expire?

      There is no expiration date required on the packaging by the EPA for Seresto® for dogs. The product should be kept in its original packaging and stored as directed on the label

      Can l bathe my dog with the Seresto@ collars on?

      Seresto® is water-resistant and remains effective following a shampoo treatment, swimming or after exposure to rain or sunlight. Under normal conditions, effectiveness lasts for 8 months. To maintain an 8-month duration, dogs must not be bathed more than once per month. There is no need to remove the collar for bathing. Please use a gentle, soap-free pet shampoo.

      How do l apply the Seresto@ collar and take it off my dog?

      How to apply the Seresto® collar on your dog:

      1. Remove the collar from its packaging.
      2. Unroll the collar and remove the small plastic connectors from inside the collar, ensuring that no remnants remain.
      3. Insert the end of the collar through the buckle and loops.
      4. Adjust the collar around your dog's neck until it fits comfortably on them.
      5. Two fingers should fit beneath the collar and neck to ensure it's not too tight. Any excess length of the collar beyond an inch past the loops should be cut off, unless it is on a growing puppy, where some additional length may be needed for adjustment as the puppy grows.
      6. Check periodically and adjust fit if necessary, especially on growing puppies.
      7. Seresto® comes with three optional reflector clips that can be attached to the collar to help keep your dog visible at night. The reflector clips should be evenly distributed on the non-overlapping part of the collar.

      Watch our application video for more information 

      How to take the Seresto® collar off your dog:

      Squeeze the outer sides of the buckle while pulling from the other end or side of the collar. Some may find it just as easy to cut the collar off before applying the new Seresto® collar. 

      Do Seresto® collars for cats expire?

      There is no expiration date required on the packaging by the EPA for Seresto® for cats. The product should be kept in its original packaging and stored as directed on the label.

      How do l apply the Seresto@ collar and take it off my cat?

      How to apply the Seresto® collar on your cat:  

      1. Remove the collar from its packaging. 
      2. Unroll the collar and remove the small plastic connectors from inside the collar, ensuring that no remnants remain. 
      3. Insert the end of the collar through the buckle. 
      4. Adjust the collar around the cat’s neck without tightening it too tight or leaving it too loose. 
      5. As a guide, fit two fingers comfortably between the collar and the neck. Pull excess collar through the loop(s). Cut collar to a length no greater than one inch (2 cm) beyond the loop(s) unless it is on a growing kitten, where some additional length may be needed for adjustment as the animal grows.  

      How to take the Seresto® collar off your cat: 

      Squeeze the outer sides of the buckle while pulling from the other end or side of the collar. Some may find it just as easy to cut the collar off before applying the new Seresto® collar. 

      Why can Seresto @ be used on pets?

      Seresto® kills fleas and ticks.

      Seresto® was designed with specific ingredients at doses that are active against fleas and ticks. Studies show that fleas and ticks are highly susceptible to the combination of imidacloprid and flumethrin found in Seresto®.

      The continuous distribution technology ensures that both active ingredients are slowly and continuously released from the collar toward the animal. This ensures that concentrations of both active ingredients are present on the dog during the entire protection period. The active ingredients spread from the site of direct contact over the skin surface.

      Is there a Seresto @ recall?

      There is no evidence in the scientific evaluation conducted for registration or the regularly reviewed pharmacovigilance data to suggest a recall of Seresto® is warranted, nor has one been requested, or even suggested by any regulatory agency. As a result, Elanco continues to stand behind the safety profile of Seresto®. It remains available to consumers as an effective way to protect pets against fleas and ticks that can transmit disease and can impact their quality of life.