Seresto® is the #1 selling non-prescription flea and tick brand.*

Seresto® is vet-recommended and no prescription is required. You can purchase it easily at your favorite retailer or in one of over 8,000 veterinary hospitals and clinics nationwide. Seresto® protects your dog from fleas and ticks for 8 continuous months.

Head-tilting goldendoodle next to seresto 8-month flea collar package

Seresto® is easy, effective and works for 8 continuous months.

  • An icon of a flea and tick.
    8 months of protection

    Slow-release design allows the active ingredient to kill and repel fleas and ticks for 8 continuous months.

  • Number 8 with the down arrow with money sign icon
    Saves money

    One Seresto® costs less over 8 months compared to most monthly orals and topicals.

  • An icon of a water-resistant shield

    Works even when wet. No need to remove Seresto® collar for swimming or bathing.**

  • A cross with a tick in the middle icon
    Vet-recommended, no Rx

    Over 32 million sold. Stocked by over 8,000 veterinary hospitals nationwide. No prescription needed.

See how Seresto® compares to the competition.


Based on label language.

See why others switched to Seresto®.

Tired of messy topicals or trying to remember to give your dog a monthly pill? Learn the reasons dog owners consider switching to Seresto®, an easy-to-use, odorless collar that provides 8 continuous months of protection.

Seresto ingredients spread from head to tail protecting dog for 8 months.

The science behind Seresto®.

Active ingredients are stored in the collar’s innovative polymer matrix and released in low concentrations over 8 months. Plus, the easy-to-put-on design is familiar to you (and wearing it is familiar to your dog). 

Seresto packaging

Why choose Seresto® over other flea and tick treatments?

No mess, less stress. Monthly flea drops are messy. Pills can be a hassle. Your dog is already used to a collar, making Seresto® a great way to protect them from fleas and ticks for a full 8 months. Non-greasy, odorless and costs less overall than most monthly treatments. It’s also water-resistant!** 

Find Seresto® near me >

One Seresto® collar outlasts the flea life cycle - which can take up to 6 months to complete.

Seresto is a trademark of Elanco or its affiliates.

All other trademarks are the property of their respective owners.

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

*Data on file.

** 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. In order to maintain an 8-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 five months for flea control, and reduced to seven months for tick control. 


Date of review February 2022

© 2022 Elanco or its affiliates