I’ve had one of these for a decade and use it ALL the time! Many uses. One thing I like to do: I like to fill it with kibble, put it on one end of the room and then have my dog go to his crate on the other side of the room. I then ask him to go to his crate and trigger it when he gets there. Got this idea from school for the dogs podcast. Great way to practice the “crate” command AND exercise him a bit and feed him all at once.