The Buster Food Cube - mentally stimulate your dog with this fun way to use energy in a playful way. Dogs love to push things around and they also love to eat. By combining the two and adding a bit of exercise for them to earn their treat, they are also learning by their experience. Buster Cubes can be adjusted to increase or decrease the amount of food dispensed. Buster Cubes are easy to clean and are dishwasher safe.