The Hi-Corner Litter Box is our original and best-selling model! The Hi-Corner Litter Box is the perfect litter box for ferrets and other pets. Yes, small animals can be litter trained. The Hi-Corner Litter Box fits easily into small animal cages. It features raised corners to help accommodate messy scooping, while preventing messes and litter from scattering outside the cage. Built-in hooks make it easy to secure the cage. It is made of easy-to-clean, stain- and odor-resistant plastic and is available in four assorted colors.