Activyl Spot-On Solution is a new kind of flea treatment that delivers benefits beyond excellent flea control. Activyl is the first treatment to work by "metabolic activation" or bioactivation and will only become active once it is inside the flea. This means Activyl is highly selective for fleas and minimises unnecessary chemical exposure to pets, humans and their environment. However, Activyl does much more than just kill adult fleas. It is also effective against all developing stages of the flea life cycle and will even prevent eggs developing into larvae.
For Dogs: Activyl is available in sizes: Toy Dog, Small Dog, Medium Dog and Large Dog.
For Cats: Activyl is available in 2 sizes: Small Cat and Cat.