Drawstring Waste Litter Drawer Liners are custom fitted for Leo's Loo Too and designed to work with most automatic self-cleaning litter boxes. Made with heavy duty tear-resistant plastic, our liners prevent odor-causing waste from sticking to the inside of the waste drawer. To use, fit your machine's waste drawer with a fresh liner, secure the edges, and make sure the center is pushed down flat. When it's time to empty the waste drawer simply pull the drawstrings to close the bag. Also fits Litter Robot 3 and 4. Drawstring Waste Litter Drawer Liners are custom fitted for Leo's Loo and Leo's Loo Too, and designed to work with most automatic litter machines. Made with heavy duty tear resistant plastic, these 2mm thick plastic liners prevent odor-causing waste from sticking to sides of waste drawers. Simply fit your machine's waste drawer with a fresh liner and secure the edges. When it's time to empty the waste drawer, pull the drawstrings to close the bag then toss away. Not for standard litter boxes.