Some people use litter pans with shavings to potty train their chins. I just use the fleece liners. Yes, they pee on them, but if you have at least 2 sets and change them out once a week, it isn't a problem. The pee absorbs into the liners. Most chins don't chew the fleece. The liners make cage cleaning really easy. I just vacuum the poo and hay daily to keep them neat. I wash my liners in detergent and white vinegar every 5 or 6 days.