Provecta II (Imidacloprid & Pyriproxyfen) for Cats, >9 lbs, is a convenient monthly topical treatment designed to kill fleas and prevent flea infestations in cats and kittens. This easy-to-apply formula contains imidacloprid to rapidly eliminate adult fleas and pyriproxyfen to stop flea eggs and larvae from developing, helping break the flea life cycle. Each card includes 4 doses for ongoing flea protection and control.