CRL Bio-Clean Water Stain Remover is excellent for removing water, mineral stains, rust, tree sap and paint overspray from glass and other surfaces. It also is an excellent mildew remover and soap scum cleaner. As a very high quality water spots and stain remover, this product is highly recommended by professional window cleaning companies and glazing contractors. It is successfully used in hospitals, nursing homes, manufacturing plants, distribution centers, hotels, supermarkets and other public facilities with difficult to clean and high traffic surfaces. CRL Bio-Clean Water Stain Remover comes in handy 16 ounce bottles and works wonders on: shower doors, windows, glass surfaces, tile, fiberglass, windshields, chrome, porcelain, Corian, anodized brass and aluminum, stainless steel, and hard vinyl. It is also very effective at removing Stage One Corrosion quickly. It also works well in combination with CRL TPC16 surface protector.