Eliminate Over 99% of Fleas with Activyl® Spot-On for Dogs and Cats.

Activyl Spot On for Dogs and Cats (Indoxacarb) is an innovative flea treatment that is highly effective at killing fleas and preventing infestation.3,6 Activyl Spot-On doesn't just kill adult fleas, it stops flea eggs and larvae from developing, breaking the flea life cycle and keeping your home and your pets safe3,6.

Also available, is Activyl Protector Band for Dogs (deltamethrin) - a long-lasting flea and tick collar that protects your dog for up to 6 months.

Activyl® Spot-On for Dogs and Cats

Try the monthly spot-on flea control that uses enzymes inside the flea to activate the full flea-killing power.

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Activyl® Protector Band for Dogs

Achieve long-lasting, proven tick protection and flea control for up to 6 months with this easy to apply, no-mess solution.

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Keep Fleas & Ticks Off Your Pet

Fleas are tiny pests that can create big problems for your pet. Get the facts, learn how to check for fleas and find the best treatment options for your cat or dog.

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Ticks can be found right in your own backyard. Research ticks in your area, tick-borne diseases, how to help prevent ticks in your home and what to do if you find a tick on your dog.

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MyPet understands pet parents can be busy people too! From new additions to long-time family members, MyPet has the tools you need to take care of your favorite furry friends.


Keep track of all your pet's appointments and treatments with the MyPet Reminders app. Create personalized profiles for each pet!

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MyPet Newsletter

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Further Reading

Find more information, facts and treatment options for stopping and preventing fleas and ticks inside and outside your home.

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  1. Blagburn BL, Dryden MW. Biology, treatment, and control of flea and tick infestations. Vet Clin N Am Small Anim Pract. 2009;39(6):1173-1200.
  2. Dryden M, Rust M. The cat flea: biology, ecology and control. Vet Parasitol. 1994;52:1-19.
  3. Data on file, Merck Animal Health
  4. Guerino F, Qureshi T, Hair J, Young D, Fiourie J. Indoxacarb Kills Developing Stages of Fleas in the Environment of Treated Cats. Presented at the WSAVA/FECAVA/BSAVA World Congress. 12-15 April 2012. Birmingham, UK.
  5. Frontline® is a registered trademark of Merial.
  6. Dryden MW, et al. Parasites & Vectors. 2013;6:366.