Each kit contains a horizontal dispenser and 10 multi-compartment foraging boxes. Since different surprises can be hidden in each compartment your bird will have to keep trying to reveal all the foraging items you have hidden away. Try moving it all around the cage to promote the search instinct and encourage additional effort on the part of your feathered friend.
The Small kit holder is around 12.7cm by 5.08cm so it is the perfect size for smaller birds like Caiques. The Large kit holder is about 23cm X 6cm so is the perfect size for medium to larger birds like African Greys.