Frontline Plus for cats is an excellent pet medicine that deals with flea and ticks on cat. It can be used on cats and on kittens that are older than 8 weeks. Frontline Plus kills 98-100% of adult fleas on cats and contains a special ingredient to kill flea eggs and flea larvae. It breaks the flea lifecycle by stopping the development of any new flea. Frontline Plus kills 4 major species of ticks, including the one that may carry Lyme disease.