Moderna Lift to Sift, the ultimate tray for litter efficiency, it's clean in seconds with minimum waste. Easy to use. Solid trays prevent leaking. Takes just seconds to clean & leaves a fresh, odor-free litter box. The design avoids litter from scattering. Uses two pans & a sift to create a perpetual litter box self-cleaning system. Cleaned easily with warm soapy water. Premium quality plastic for long-lasting use.