Read more Revolution Topical Solution for Cats, 5.1-15 lbs, (Blue Box) 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. Proudly sourced directly from the manufacturer or their approved distributor. Guaranteed genuine and backed by the manufacturer.