QT, Ready To Use, Marble, Travertine, Limestone & Slate Cleaner & Resealer, Everyday Cleaner Formulated To Effectively Clean & Maintain The Natural Beauty Of Your Stone, Contains An Aqua Mix Sealer In Its Formulation To Reseal As It Cleans, Applying A Thin Coat Of Sealer Every Time You Clean. Its Formula Is Non-Acidic So It Will Not Harm Your Stone Or Grout, Cuts Through Grease, Dirt & Grime While Inhibiting The Growth Of Mold & Mildew.