Owners of Littermaid automatic litter boxes have gone out of their way to avoid replacing the waste receptacles. Some have purchased the BAG-it. Some use plastic liners. And some just keep emptying and reusing the existing receptacle. Regardless of how owners avoid replacing the receptacles, their plastic lid eventually becomes unusable. The PERMA-lid is a permanent lid for the waste receptacle. Fabricated from heavy duty acrylic, the PERMA-lid is highly durable and will not fall off the litter box cover. The PERMA-lid can be cleaned easily and it can be removed and reinstalled in minutes without any tools. This product fits all models of Littermaid Litter Boxes using standard Littermaid receptacles. Check out Youtube for Product Demos!