Adams Flea and Tick Spot On for Cats Under 5 Pounds Kills adult fleas, deer ticks, flea eggs, flea larvae & mosquitos by contact Contains the Infest Stop ingredient that kills flea eggs and larvae Starts killing fleas within 15 minutes Compatible with the award-winning Smart Shield* Applicator that helps get the treatment down to the skin where the bugs live and helps keep the treatment off you New and Improved Formula