Foldable Fully Enclosed Hooded Cat Litter Box Self-Cleaning Kitty Toilet w TrayFeatures: There are large area hollow out falling sand pedals in the front door and upper exit, which helps remove litter particles from the cat s paws and prevent cat litter from being spilled everywhere. The upper exit can train cats to bounce fun, but if your cat prefers to come out from the front, you can adjust it at will. There is a conversion buckle under the transparent door. Pull up is single door opening,and pull down is double door opening.