Kills fleas and ticks for up to 30 days. Compare to Frontline spray, same active ingredient (PetArmor LongLast 30 Day Flea & Tick Spray for Dogs & Cats is not manufactured or distributed by Merial. Frontline is a registered trademark of Merial). Waterproof. PetArmor LongLast 30 Day Fipronil Flea & Tick Spray for Dogs & Cats controls infestations by killing fleas and ticks for at least 30 days. Stops and prevents infestation of fleas and ticks (brown dog ticks, American dog ticks, lone star ticks, and deer ticks [which may transmit lyme disease]). If you have any questions or comments about this product, please write: Consumer Response, P.O. Box 540399, Omaha, NE 68154-0399. Questions? Comments? Call 1-888-908-Tick (8425).