Petlock II Dog 21-55 lb 4pk

Contains the same active ingredients used in Advantage II. PetLock II is a once-a-month topical flea treatment for cats 8 weeks and older. Petlock II kills and controls all flea life stages. Kills fleas within 12 hours of application. Prevents reinfestation for up to 4 weeks. Convenient, easy to apply. 4-Month Supply.