Revolution Plus for small cats & kittens 2.8-5.5 lbs (1.25-2.5kg) 3 pack in a yellow box. Revolution plus treats fleas, flea eggs, flea larvae, heartworm, ticks, roundworms, hookworms and ear mites. This 3 pack will treat one cat 2.8-5.5 lbs (1.25-2.5kg) for 3 months. Revolution Plus topical drop can be used on kittens from 8 weeks of age.