If you have a bored dog or any old and unusable tennis balls, come to one of our donation stations at a dog park near you! Simply find the contraption, open the lid, and pour the tennis balls in. They will feed into the cylinders recycled out of tennis ball cans, making it easy for your dog to pull the tennis ball out and play! The opening is designed specifically for a dogs mouth! Join us in fighting waste, one tennis ball at a time!