PetLock Duo is specifically formulated for use on cats and kittens over the age of 8 weeks. This medication is applied topically, once per month, and effectively interrupts the flea lifecycle. Each pack comes with 4 applications.

Kills existing fleas within 12 hours of application.

One application lasts for 4 weeks.

Topical formula is waterproof and fragrance-free.

For cats and kittens over 8 weeks of age.

PetIQ's mission is to help pet parents by providing consistent and affordable access to veterinary services and products. Based in Nebraska, PetIQ's core brands and products are designed to help pets, and their owners, live their very best lives.