I got one of those hooded cat litter trays for Moo & Liquorice yesterday as they are always digging their tray out all over. Anyway we tried them with it without the door on it and they used it fine. But then we tried it with the door on & they couldn't figure it out. They pooed & weed all over their hutch! :roll: Think it was probably Moo as she couldn't figure how to get in & out of it! It was soooo funny to watch them being bopped on the head with the door! :lol: