Protect your pet all year round by using this Hartz UltraGuard Pro Flea and Tick Treatment. It features a patented and easy-to-use angled applicator with rounded edges that easily get through your pet s fur to apply the treatment directly to the skin. Use this cat flea and tick treatment only on cats and kittens who are 12 weeks of age and older. It starts killing fleas ticks flea eggs and larvae within 15 minutes and even helps repel mosquitoes. It also prevents re-infestation by stopping the flea life cycle in its tracks for up to 30 days. Each box includes a three-month supply in three single-dose 1.8ml tubes.