Don't continue to purchase those expensive plastic receptacles - purchase Gulf Coast Pet Supplies waste receptacle liners for use in the littermaid waste receptacles and other small (12 x 5 x 5) waste receptacles auto litter boxes. Each roll contains 50 liners that are easily placed over the hard plastic receptacle and best used along with the Bag-It System and Perma-lid (use coupon code COASTAL at Bag-It checkout for $2.00 off). When the receptacle becomes full, simply pull the liner out, tie it up throw away and insert a new liner. This supply changing twice per week will last almost 2 years.