My Simon doesn't seem to get the litterbox. He uses it fine, but then he digs REALLY powerfully so it shoots out of the box all over the floor. Sometimes he does this seemingly just to get our attention. Sometimes he seems like he's playing with the litter. How can I get him to stop this? I end up having to sweep the floor 3 or 4 times a day, and it's really loud when we're trying to sleep.