I switched litter about 3 weeks ago. I switched from clay to world's best. I have had no problems until a few days ago when I noticed poop on the rug in the laundry room where I keep Asher's litterbox. I thought maybe the box was just too dirty for Asher so he decided to go elsewhere. Well, a couple of days later I found the same thing, and again tonight (I found it by stepping in it). The box is not dirty so I'm not sure why he's doing this? Does he not like the litter? Jack (the new kitten) has been using Asher's litter box (and visa versa), maybe Asher doesn't like Jack using it? Asher has no problem peeing in it and I know he's pooped in it so why is he sometimes pooping outside of it?