Cat Litter Box - High Sided Lid - Open Top Entry - By Two Meows Reduces Messy Litter Box Scatter. Simply fill colored pan half way. MANUFACTURERS LIFE TIME WARRANTY! It's compatible with all types of kitty litter. Durable, Thick Non-Stick Plastic - Keeps litter from sticking. We recommend a 3-day aclimation period with existing box. Used by Veterinarians and Animal Shelters.