I do in Tobys litter tray. Tobes is a lionhead house bun, with fluffy chops & a fluffy skirt & the megazorb gets everywhere, both on him & round the house. I know its cheap, & Gods knows I need to make savings, but when this sack is finished I don't know if I'll keep using it as although catoilet is much more expensive it's a lot less messy.