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Your adventures. Our precise care.

Dogs have no fear of dashing through the bushes – and potentially into fleas, ticks, mosquitoes and more – in pursuit of a thrown ball. At Bayer, we’ve been committed to helping protect dogs like yours for decades, by getting the basics precisely right for you, your dog and your favorite game of fetch.

Why we do it ›

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We're making it easier than ever to help defend your dog from

fleas, ticks, heartworm disease and more – for less.

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You have questions. We have answers.

When you love your dog from nose to tail, you may have questions about their care. Check out our library of dog care basics.

  • Flea icon

    Fleas aren’t just annoying – they can cause health issues

    Fleas can be intensely irritating for you and your dog and not just in the “annoying” sense of the word. Aside from causing pain and itching, fleas can make your dog sick.

    Discover flea risks ›
  • Mosquito icon

    Mosquitoes: A small insect that carries big health risks

    You probably protect yourself against mosquitoes when you go outside, but what about your dog? Mosquitoes can threaten dogs’ health too. Explore mosquito-borne diseases and how to repel and kill mosquitoes.

    Understand mosquito diseases ›
SEE ALL DOG EDUCATION
  • Seresto® for large dogs packaging

    Seresto® for dogs

    An easy-to-use, odorless, non-greasy collar that kills and repels fleas and ticks for 8 months.

    Seresto® for dogs

    Indicated for:

    FLEAS
    FLEAS
    TICKS
    TICKS
    CHEWING LICE
    CHEWING LICE

  • K9 Advantage® II for extra large dogs and large dogs packing

    K9 Advantix® II

    A once-monthly topical application that kills and repels fleas, ticks and mosquitoes.

    Do not use on Cats.

    K9 Advantix® II

    Indicated for:

    FLEAS
    FLEAS
    TICKS
    TICKS
    MOSQUITOES
    MOSQUITOES
    BITING FLIES
    BITING FLIES
    CHEWING LICE
    CHEWING LICE

    Do not use on Cats.

  • Advantage Multi® for Dogs (imidacloprid + moxidectin) packaging

    Advantage Multi® for Dogs (imidacloprid + moxidectin)

    An all-in-one monthly topical that prevents heartworm disease, kills adult fleas and treats roundworms, hookworms and whipworms.

    Advantage Multi® for Dogs (imidacloprid + moxidectin)

    Indicated for:

    HEARTWORMS
    HEARTWORMS
    FLEAS
    FLEAS
    ROUNDWORMS
    ROUNDWORMS
    HOOKWORMS
    HOOKWORMS
    WHIPWORMS
    WHIPWORMS
    SARCOPTIC MANGE
    SARCOPTIC MANGE
    MICROFILARIAE
    MICROFILARIAE

    CAUTION: Federal (U.S.A.) law restricts Advantage Multi® for Dogs (imidacloprid + moxidectin) to use by or on the order of a licensed veterinarian.

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Science For A Better Life

Bayer gives back.

We believe in our products, designed to help protect your pet from fleas, ticks and more. And we also believe in supporting the causes and institutions that share our commitment to the value pets bring to our lives and help to ensure the ongoing care of our pets and communities.

PARTNERS WITH A PURPOSE