Frontline Plus for Cats Green is a 6-pack of monthly spot-on flea treatment, giving cat owners a full six months of protection in a single purchase. It kills adult fleas and biting lice while also breaking the flea life cycle by targeting eggs and larvae in the surrounding environment.

Each pipette combines fipronil and S-methoprene: fipronil kills adult fleas on contact within 24 hours, while S-methoprene prevents eggs and larvae from developing into new adults. The water-resistant formula stays active after bathing, and the application to the back of the neck is quick enough to become part of a low-effort monthly routine. Suitable for cats and kittens from 8 weeks of age.

A 6-pack locks in a half-year of continuous flea control, which matters most in warmer climates where fleas are active year-round. Buying ahead removes the risk of gaps in coverage that let the environmental flea population rebuild between doses.