Litter Robot 3 Black Rubber Liner with Weight (Litter robot 3 Not included). This auction is for a used rubber liner and weight for a litter robot 3. There are no deep scratches or tears but it has been previously used and new owner will need to clean to remove smells from prior use or just use as is with smell from prior cat use. I didn’t want to bother with cleaning so I just bought a new one and replaced it entirely. These retail for $70 and are near impossible to find any cheaper. Thought this may help someone save a little money listing it here.