Advantage Multi® for Cats is a convenient, broad-spectrum heartworm preventive in a monthly topical application. It is also indicated to kill adult fleas and treat flea infestations, as well as to treat and control roundworm infections caused by Toxocara cati, hookworm infections caused by Ancylostoma tubaeforme, and ear mite infestations caused by Otodectes cynotis. Advantage Multi for Cats is for use on cats and kittens at least 9 weeks of age and weighing at least 2 lbs.