Part toy, part treat dispenser, the Atomic Treat Ball is a barker favorite. The OurPet's Atomic Treat Ball dog toy uses your dog's favorite food or treat to keep him mentally stimulated, physically active, happy and healthy The "Molecule" shaped toy is made from durable, nontoxic thermoplastic that holds up to the toughest dogs. Portion controlled meals or treats can be loaded into the opening. The Atomic Treat Ball is easy to clean and refill. Not for aggressive chewers.