Advantage Multi (Advocate) is a monthly topical spot-on treatment to control fleas, heartworm, gastrointestinal worms (hookworm, roundworm and whipworm), sarcoptic mange, demodicosis and ear mite infestation. Fast Flea Control and Prevention: Advantage Multi (Advocate) spreads rapidly over your pet, killing 98-100% of adult fleas within 12 hours of application. In addition, Advantage Multi (Advocate) controls flea larvae in the pet's environment and reduces the incidence of Flea Allergy Dermatitis. Gastrointestinal Worms: Advantage Multi (Advocate) treats and controls whipworm, hookworm and roundworm. Heartworm Prevention: Advantage Multi (Advocate) is used monthly to prevent heartworm infection in dogs. Treats and Controls mange and lice. Controls Ear Mites.