Just Add Water And This Remarkable Sponge Eliminates And Erases Dirt And Stains On Most Hard Surfaces. "hospeco's X-sponge Is A Water Activated Cleaning Sponge That Erases Dirt And Stains On Most Hard Surfaces. The X-sponge Is An Environmentally Friendly Product Since No Other Cleaning Chemicals Are Required Except For Water. The X-sponge Is Not Only Remarkably Effective On Bathroom Tile, Counter Tops, Baseboards, And Floors, But Also Erases Scuffmarks, Crayons And Marker Stains. Use It On Your Most Difficult Surface Stains. X-sponge 24 Case"