Trashing her litter tray. She hasn't done it for weeks, and suddenly started again a couple of days ago. I can't understand it. She digs all the hay out of the way, then shreds the newspaper underneath. SO then there's nothing covering the bottom of the tray, she wees in it, amd it just sits there in a puddle. If i put it all back she just does it again. If i try to stop her she growls and lunges at me It's really annoying me, as i just don't have time to keep fixing it and I don't have endless funds to replace everything four times a day!! Also, digging up her wee and poops makes it stink!!! I change it every morning anyway, it's not like I leave it for days. And she does it whether i'm in the room or not, so it can't be that she's lonely. Does anyone have a clue as to why???? And what can I do about it? Help!!