Starmark Treat Dispensing Puzzle BallStarmark Mental Stimulation toys help keep pets mentally engaged in an activity they enjoy. They help foster natural hunting and foraging behaviors and help prevent destructive boredom behaviors. Puzzle Balls can be used with Starmark Treats, or with portions from your dogs regular meal to turn mealtime into playtime. Four inner chambers for varying difficulty Easy to clean Releases food as your dog paws, nudges, and rolls Rubbery outer coating