She REFUSED to use the litter pan lol so I took it out. She hasn't turned the fleece colors or anything weird like that, and with so much fleece it's not concentrated enough to be smelly, so it worked out ok. At first I was worried about her kicking up the fleece cuz I've heard stories about people's chins balling them in the corner so it was a stinky ball of fleece, but she doesn't do that, just sleeps under it lol. And she doesn't get urine in her fur transferred from the fleece, which I was worried about, so that's good. She seems to like it so whatever floats her boat!