Designed to be used with power washers or for manual cleaning of concrete, concrete walkways, patios, driveways or sidewalks. Removes oil, grease, and grime. Also removes tough stains and discolorations not caused by dyes. Non-corrosive and non-degrading. Non-toxic and biodegradable. Will not harm plants, trees, shrubbery or lawns plus is safe to use in areas visited by children, pets, and other wildlife. Concentrated. Size 1 gallon.