Fill the Stuff-A-Ball with kibble and treats or doggie toothpaste and watch the fun begin. Keeps dogs contentedly busy and out of trouble for long periods of time. Patented dental ridges effectively clean teeth and massage gums. Doggie toothpaste can be used. Made from flexible, durable, natural rubber, this treat dispenser is guaranteed to keep your dog occupied for hours. Comes in three great sizes - Small, Medium & X-Large