Vet-Kem Ovitrol X-Tend Spot-On for Cats kills adult fleas, flea eggs, flea larvae, deer ticks, and mosquitoes on cats and kittens 12 weeks of age and older. Provides relief from flea infestations for up to 30 days. Contains Etofenprox and s-methoprene, plus a natural coat conditioner. Ovitrol X-Tend comes with an X-Tender Applicator, which is specially designed to make applying flea and tick control easier, more precise, and neater than ever before. You simply insert the tube into the applicator