Seresto® flea and tick collar for dogs

Seresto® collar provides flea and tick prevention for dogs that helps protect dogs for 8 continuous months. This secure flea and tick treatment is not only effective but also convenient in the following ways:

  • Kills and repels fleas and ticks through contact –– no biting required
  • Aids in the treatment and control of sarcoptic mange on dogs
  • Kills chewing lice
  • Easy to apply
  • Odorless
  • Nongreasy
  • Water resistant*
Seresto large and small dog product packages with image of Seresto collar.

Choose what's right for your dog:

Weight Band:

Seresto® FAQs

How do Seresto® collars for dogs work?

Is Seresto® for dogs water resistant?

Do Seresto® collars for dogs expire?

Can I bathe my dog with the Seresto® collar on?

How often can dogs swim with a Seresto® collar on?

What are some of the design features of the Seresto® collar for dogs?

How do I apply the Seresto® collar and take it off my dog?

How long does Seresto® for dogs take to work?

What’s the difference between Seresto® for dogs vs. NexGard®, Frontline® Plus, Bravecto® and Simparica®?

How to apply Seresto®


How to use the 8-month Seresto® dog collar

Learn about the proper fit for Seresto®, an 8-month flea and tick collar for cats, that's non-greasy, odorless and easy to use.

View transcript


For a convenient, non-greasy collar that helps protect your dog from fleas and ticks for 8 continuous months, Seresto® is a perfect fit.

And to make sure Seresto® is the perfect fit for your dog, here are some tips:

Keep the collar in its original packaging until you’re ready to use it.

Remove the small plastic connectors inside the collar before using.

After you place the collar around your dog’s neck, the ratchet system and loop will secure it in place.

A proper fit means the collar can’t slide over your dog’s head and two fingers can fit between the collar and its neck.

Cut off any excess length of the collar that extends more than one inch past the loop. Leave even more if you have a growing pup.

Be sure to check the fitting every once in a while and adjust when necessary.

The three included, but optional, reflector clips help keep your dog visible at night. Place them, spaced apart, over the non-overlapping part of the collar.

Seresto®. For 8-month protection against fleas and ticks, it’s a perfect fit.


Looking for Seresto® for dogs?

Find where to buy it in your neighborhood.

Did you know Seresto®
is also available for cats?

See Seresto® For Cats

*Seresto® is water-resistant and remains effective following a shampoo
 treatment, swimming or after exposure to rain. Under normal conditions, effectiveness lasts for 8 months. In order to maintain an eight-month duration, dogs must not be bathed more than once per month. For dogs that swim once a month or more, the control duration is reduced to 5 months for flea control and reduced to 7 months for tick control.

Seresto® is protected by U.S. Patent No. 7,910,122.