Keep your pooch happily playing with PetSafe Busy Buddy Peanut Butter & Rawhide Variety Pack Refill Rings Dog Treat. These peanut butter and rawhide-flavored rings are great for rewarding your furry friend after training sessions or as a daily “just-because” treat. Simply add them to your four-legged family member’s favorite PetSafe toy (sold separately) to help keep him engaged during playtime. These refill treats are compatible with the following Petsafe toys—Bristle Bone, Bouncy Bone, Jack, Nobbly Nubbly, Slab o' Sirloin, Cravin' Corncob, and Chompin' Chicken.