Advantage Multi® for Dogs 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 treat and control roundworm infections caused by Toxocara canis and Toxascaris leonina, hookworm infections caused by Ancylostoma caninum and Uncinaria stenocephala, and whipworm infections caused by Trichuris vulpis. Advantage Multi for Dogs is for use on dogs and puppies at least 7 weeks of age and weighing at least 3 lbs.