Advocate is an easy-to-use spot-on treatment for controlling a wide range of parasites. The monthly preventive treats fleas, ear mites, lice, intestinal worms and prevents heartworms in cats. Advocate provides faster treatment as it stops flea bites within 5 minutes of application and starts killing fleas and flea larvae within one hour of treatment. It protects cats from heartworm disease and other intestinal worms. Get the best cat supplies products at the lowest price at DiscountPetCare today.