Fresh Step Litter Box Accessories | Disposable Litter Box, Extendable Scoop, and Litter Trapper Keeper Mat WATERPROOF CAT LITTER BOX  Fresh Step Disposable Litter Box is waterproof and can be used anywhere in the house, for a cat box that is convenient and handy. Small litter box can fit in any corner of your home if you want a hidden litter box that wont get in the way EASY SET UP  Cat litter box is easy to set up. Just remove any labels on packaging before use, fill kitty litter box with 2 2.5 of Fresh Step litter, and your disposable litter box is ready to go! These litter boxes make caring for your cat quick and simple LITTER PAN MEASUREMENTS  Outer length of cat litter boxes is 17.25", outer width is 13.25", inner length is 14", inner width is 9.5". Litter box is ideal for those short on storage, and for cat owners who travel frequently MADE WITH RECYCLED PLASTIC  Fresh Step disposable cat litter boxes are made with recycled plastic, for a cat litter pan that is good for the environment REPLACE EVERY 4 MONTHS  For maximum odor control, replace litter box every four months. Litter liner is not required, but you may use liners at any time