Calclean is a unique biologically formulated cleaner designed to effectively remove most kitchen and bathroom stains, including limescale. It can be used on all surfaces including steel, plastics, tiles and enamel. Calclean will leave surfaces sparkling. simply spray calclean onto the surface and leave for a few minutes. During this time the special formula will break down even the most stubborn stains. For heavier stains like oil and grease, simply leave the formula on for a few extra minutes and watch the stain vanish. After application, simply wipe clean with a damp cloth. due to the unique way in which calclean is formulated, it is biodegradable and solvent free, making it environmentally friendly.