How to deal with kittens turning their litter box over.
Problem: kittens turning their litter boxes over and spilling the litter, causing multiple cleanups. Solution: using a readily available dishpan, place it inside a plastic crate designed for school lockers. The dishpans are available in kitchenwares, and the crate is available in back-to-school sections. No more messes!
—Dr. Amy Cousino, veterinarian
The Cat's Meow Cat Clinic