Seresto® for dogs

Seresto® for dogs
When they’re protected from fleas and ticks, your dog can stay focused on the unique quirks and behaviors that make them, well, your dog. Seresto® for dogs offers the performance you expect from a monthly flea and tick treatment like topicals or pills, with the convenience of an easy-to-use 8-month collar. You read that right: One effective, odorless, non-greasy collar equals 8 months of protection.
Seresto Collar for Large Dog and Small Dog product packages.
Seresto®: The #1 selling
non-prescription flea and tick brand*
Why choose Seresto® for dogs?
Kills and repels fleas and ticks through contact
- no biting required
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Provides 8 continuous months of flea and tick protection for dogs
Aids in the treatment and control of sarcoptic mange, and kills chewing lice
Easy to apply, odorless, non-greasy and
Fleas and ticks don’t stand a chance

Protects against: Fleas and flea larvae, ticks, sarcoptic mange, chewing lice

Works for: Dogs and puppies at least 7 weeks of age

Application type: Collar

Treatment frequency: 8 months

No prescription required

How does Seresto® work?

See how the Seresto® collar helps protect your dog from fleas and ticks for 8 months.

Diagram showing how Seresto works through the release technology on a Boxer.
Truly unique collar technology for your dog

Seresto® is the leading, innovative flea and tick collar for dogs that applies two active ingredients over your dog’s hair and skin surface: imidacloprid and flumethrin. This steady release of treatment is effective for 8-month protection against fleas and ticks. That's one convenient, non-greasy, odorless flea and tick collar instead of 8 monthly oral or topical treatments.


Ready to help protect your dog from fleas and ticks?
Seresto®: A flea and tick treatment different from the rest<sup>†</sup>
  Seresto® logo Frontline® Plus logo NexGard® logo Bravecto® logo Simparica® logo


†Based on label claims.

How to apply the 8-month Seresto® dog collar
How to apply Seresto® collar
How to apply Seresto® collar: Step 1 put collar on dog
Step 1
Insert the end of the collar through the buckle.
How to apply Seresto® collar: Step 1 put collar on dog
Step 2
Adjust the collar around the dog’s neck without it being too tight or too loose. It should be possible to enter two fingers comfortably between the collar and the neck.
How to apply Seresto® collar: Step 3 cut off the extra length
Step 3
Pull excess collar through the loop(s). Collar length greater than 1 inch beyond the loop(s) should be cut off unless it is on a growing puppy.
How to apply Seresto® collar: Step 4 evenly put on the 3 reflector clips on dog
Step 4
Three reflector clips may be fixed permanently to the collar to increase your dog’s visibility in the dark. Evenly distribute the clips on the non-overlapping part of the collar. The clips are correctly applied when a clicking sound is heard.
Top questions about Seresto® for dogs
How do Seresto® collars for dogs work?

The Seresto® collar works with a unique 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.

Watch our video for more information about How It Works.
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 I bathe my dog with the Seresto® collar 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 I 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.
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