KWIK SAND XT is formulated specifically for the concrete industry to remove hardened concrete from trucks, equipment, forms, hoppers, pumps, tools, etc. KWIK SAND XT works without harsh acids like Sulfuric, Hydrofluoric, Muriatic and Phosphoric. It is so safe that it is classified a Non Hazardous by the DOT. It has been formulated to remove large amounts of concrete build-up quickly. KWIK SAND XT will remove 1/8 to 1/4 of an inch of concrete at a time.