REMOVE UNWANTED CONCRETE WITH CLEAN-OFF Clean-Off is a biodegradable and green product that easily removes unwanted cement and other dried on materials from any surface. This concrete dissolver breaks down molecules to turn dried on concrete and cured cement into the consistency of mud, making it easy to wash away. Clean-Off contains no muriatic, sulfuric, phosphoric or hydrofluoric acids. It is not flammable and is a non-corrosive product according to ASTM-D5864 testing standard. If you need to get stubborn dried concrete off of tools, automobiles, and more reach for Clean-Off. Even works great on clothing. Come visit us at www.ConcreteChemicals.com