How does Seresto work?

    Inside the unique polymer matrix of Seresto are two active ingredients:

    • Imidacloprid has been used in products for years to control flea infestations.
    • Flumethrin effectively repels and kills ticks.Flumethrin works together with imidacloprid to provide dual action against fleas and ticks. No other treatment has this combination of ingredients.The active ingredients spread from the site of direct contact over the skin surface of the cat or dog.*Sustained release technology*Seresto works similarly to a monthly topical, but as the active ingredients wear off over time, a new supply is continuously replenished in low concentrations. The active ingredients spread from the site of direct contact over the skin surface.Bayer's polymer matrix technology is designed to slowly and continuously release the active ingredients for eight months, a duration that makes it clearly different from other flea and tick collars.

    Why Choose Seresto® Flea & Tick Collar?

    • 8 Months of Continuous Protection - Long-lasting defense against fleas and ticks with justone collar.
    • Fast 8 Reliable - Starts killing fleas within 24 hours and repels ticks before they can bite.
    • Vet-Recommended - Trusted by veterinarians worldwide for safety and effectiveness.
    • Hassle-Free Solution - No messy topical treatments or monthly pills to remember.
    • Water-Resistant & Durable - Works through baths, swims, and outdoor play.
    • Comfortable for Your Dog- Lightweight, odorless, and easy to wear every day.

      Frequently Asked Questions

      • How long does it take to work on fleas?

        Seresto kills existing fleas on dogs within 24 hours after application. After those 24 hours, new fleas are killed within 2 hours.

      • How do I know if the Seresto collar I purchased is authentic?

        It is crucial that pet owners purchase real and genuine Seresto products from authorized and trusted retailers.

      • Does it expire?

        There is no expiration date required on the packaging.
        The product should be kept in its original packaging and stored as directed on the label.

      • What are the key ingredients?

        The active ingredients in Seresto collars are Imidacloprid and Flumethrin: Imidacloprid to help protect against fleas and Flumethrin to help protect against ticks.