Stone Soap RTU is a ready to use concentrated water based cleaner used by the professionals which has been specifically formulated for marble, granite, slate, limestone, terazzo, cultured marble, ceramic and quarry tile and all other natural interior and exterior stone surfaces. Stone Soap RTU is specifically formulated to be "stone friendly" and will not dull or damage the stone surface and it will not leave any soap residues or cause the surface to become slippery. Unlike other harsh and aggressive cleaners, our product is pH neutral (pH 7), does not contain any abrasives, acids , alkalis, salts, phosphates, solvents, d-limonene, artificial colours, fragrances or preservatives. Stone Soap RTU will clean down into the the pores of all natural stone surfaces to remove dirt, dust, grime, soot, grease, oils, food and beverage spills, finger-prints and scuff-marks. Stone Soap RTU will not damage or strip protective sealers that have been applied to natural stone surfaces.