Petmate® Litter Box Liners make controlling odors and keeping your house fresher! Easier cleanup means pet parents are able to remove all the old litter in one quick step. Designed for easy installation and removal. Simply spread the liner over litter pan so that it overhangs rim on all sides. Press center of liner down to bottom of pan, and smooth outward. Fill the pan and liner with litter. Sift out solid waste daily. To remove litter simply lift the liner from all sides, gather above pan and tie. Fits litter pans 18 in x 18 in and fit large litter domes such as the Petmate Classic Booda Dome. Comes in a convenient twelve count box. White only.