Popsie had a problem with pooing out of his litter box. Well, when I lost my job and was home all the time he quit doing it so I figured he did it because of seperation anxiety. I'm still home all the time but he's pooing out of the box again. I know that he knows it's naughty because he does it in a corner or behind something like he's hiding it. I keep his box clean so what could be the problem?