

I had a cat that would get in the litter box, do her little ritual of scratching and pawing like most cats do. Then she would stick her but over the edge and squeeze one out on the floor next to her box. She would pee in the litter box but refused to poop in it. We tried all kinds of different box sizes and shapes, and nothing worked. We ended up just laying newspaper under the box for years. Goofy goober. Cat tax -
Or alternatively, you need a pile of cocaine on a kit-kat.