He probably doesn't realize the pellets are there and when he did notice, he probably wanted to move it out of his box. >.> You'd be amazed how often these little goof balls will pick up pieces of hay and toss them out the box as well.Yes, it’s covering it but he likes to dig for some reason lol my guess would be to find better strands or something. He’s able to reach the pellets on the bottom. I didn’t put a lot just enough for it to cover the bottom. Then I put the hay on top. Looks like this.