The Libman Gator 9 in. Wet Cellulose Mop Refill makes it easy to clean better and faster. Its improved design features an extra absorbent cellulose sponge surface to absorb messes and spills quickly and easily, and the sponge snaps in place without any fuss. Its 9” width and commercial-strength construction make it perfect for the toughest cleaning jobs. Clean like a pro with Libman.