For use only on dogs & puppies up to 22 lbs over 12 weeks of age. 3 month supply. Starts to kill fleas & ticks in as little as 5 minutes. Kills fleas. Kills ticks. Kills chewing lice. Waterproof. Prevents and controls reinfestation of listed pests for 30 days. Contains fipronil, same active ingredient used in Frontline brand products (This product is not manufactured or distributed by Merial, the makers of Frontline brand products). Starts to kill fleas and ticks in as little as 5 minutes and continues to kill for a month. Kills newly emerged adult fleas before they lay eggs. Prevents and controls reinfestation of listed pests for 30 days. Kills ticks that may transmit Lyme disease, Rocky Mountain spotted fever, ehrlichiosis, babesiosis, and anaplasmosis. Kills brown dog ticks, American dog ticks, and lone star ticks and deer ticks for up to 30 days. Rapidly eliminates infestations of chewing lice. Aids in control of mites that cause sarcoptic mange. Fast acting. Remains effective, even after bathing, water immersion, or exposure to sunlight. The active ingredients in Sergeant's Pronyl OTC Max for dogs feature a sustained release formula developed for fast acting and long lasting control of fleas, ticks, and chewing lice for up to 30 days on dogs. 6 Step Topical Checklist: Read the label completely and follow directions. Weigh your pet. Do not use dog products on cats. Do not treat with more than one pesticide product at a time. Separate animals after application to avoid chance of ingestion. Do not split tubes between pets.