Novartis Parastar 3pk With Fipronil Flea and Tick Control For Dogs 23-44lbs (Green) For dogs and puppies 8 weeks or older 23-44lbs Contains fipronil to effectively kill flea and ticks including those that transmit Lyme disease Controls mites that may cause sarcoptic mange Kills fleas, deer ticks, lone star ticks, chewing lice, American dog ticks