"New, easy, one-step application!!! Five way protection-kills fleas for up to one month, kills deer ticks for up to one month, kills flea eggs for up to three months, kills flea larvae for up to three months, and repels mosquitoes (prevents mosquitoes that transmit West Nile Virus from feeding on cats for up to one month.) For cats 5 lbs. and over. Quick acting!!! Long lasting!!! 3 month supply!!!."