The Petmate Top Entry Litter Pan Liners are heavy duty tear resistant disposable plastic liners that make litter box cleanup a snap. These disposable plastic liners make for easier litter box cleanup allowing pet parents to remove all the old litter in one quick step. Simply spread the liner over litter pan so that it overhangs rim on all sides. Press center of liner down to the bottom of the pan, and smooth outward. Fill the pan and liner with litter according to package directions. Sift out solid waste daily. To remove litter simply lift the liner from all sides, gather above pan and tie.