Advantage Multi Topical Solution for Cats is a broad-spectrum topical solution that helps: prevent heartworm disease, kill adult fleas, treat flea infestations and treat and control ear mite infestations, along with roundworm and hookworm infections. This easy-to-use solution should be applied once a month on cats and kittens 9 weeks of age and older weighing between 2-5 pounds.We directly source prescription medications from manufacturers and wholesale distributors registered with the FDA and licensed by applicable state boards. Guaranteed genuine, and where applicable, backed by the manufacturer.