EnviroShield Waterless Masonry cleaner is formulated with natural rubber and removes stains caused by heavy dirt, grime, soot and nicotine on limestone, sandstone, marble, concrete and more. Designed for both interior and exterior surfaces, its waterless application makes it a very safe, effective solution that can be used across a wide variety of areas without making a mess. The Waterless Masonry Cleaner is available for professional use only and is designed to work below the surface and pull out ugly stains that have penetrated deep into the pores of masonry material. The surface is left restored to its original beauty. Application instructions are important – please watch our video prior to use.