Easy to use: works best together with a bit of liquid. Moisten the Pumie stone, then press the flat edge on the dirty area and rub it back and forth. Rinse the Pumie stone under running water after use. The Pumie stone works where other cleaning agents fail. Even the strongest acidic cleaning agents fail to remove some stubborn stains. The Pumie stone can be used to speed up the effects of other cleaning agents or on its own. Follows through with the work that other cleaning agents are unable to do. Cleans dirt rings on toilets in seconds. Removes water deposits, stains, scale, grill rust, and mineral deposits in urinals, wash bs, baths, showers and sanitary facilities. Removes graffiti and colour of tiles, concrete and stone walls. Eliminates burnt food, grease, and grime deposits in ovens and on cooking grates and iron pans. Removes limescale, rust, stains, and paint. Cleans porcelain, ceramic, concrete, masonry, and iron,.