A highly effective innovation in flea treatment

Activyl is an innovative flea treatment that's highly effective at killing fleas and preventing infestation.1 Activyl doesn't just kill adult fleas. It uniquely stops flea eggs and larvae from developing, breaking the flea life cycle so your pet is not re-infested and your home is kept flea-free.1,2

Activyl, the latest innovation in monthly spot-on flea control, features indoxacarb and a mode of action that uses enzymes inside the flea to activate the serious flea-killing power of Activyl.

Dogs need protection from both fleas and ticks, and not just out in the woods! With the combination of innovative flea control and proven tick control, Activyl Tick Plus gives you and your dog the best of both worlds, indoors and out.


  1. Data on file, Merck Animal Health.
  2. 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.