David Gann 1 i thought this would be a ball launcher with some kind of a spring or motorized apparatus but it’s absolutely not- it’s a simple treat dispenser triggered when you drop a tennis ball sized object into the hole at the top. it spits food out, and gravity pulls the ball down onto the floor. if the floor is hard, maybe it will roll a few inches.i would say it’s absolutely useless but it does serve as a training tool to teach the dog how to load the ball into the hopper of this actual launcher i got from america:https://www.amazon.com/PetSafe-Automatic-Launcher-Easy-Open-Packaging/dp/B072J4KCVP