Frontline plus flea and tick prevention for large dogs 89 to 132 LBS. Kills fleas flea eggs & larvae ticks and chewing lice. Kills ticks including those that may transmit lyme disease. Frontline plus for dogs provides fast-acting long-lasting waterproof treatment and control of fleas ticks chewing lice and sarcoptic mites for use only on dogs weighing 89-132 lbs.