Revolution - Parasite Control for Cats - Blue 5.1-15lbs - 45MGOverview: Revolution is a medication that is applied directly to your furry friend's skin to protect them from biting critters. When applied every 30 days, Revolution protects against heartworms and fleas. It may also be effective in preventing and treating ear mites, roundworms, and hookworms. Uses Revolution kills adult fleas and prevents flea eggs from hatching for one month. It is also indicated for the prevention and control of flea infestations,