Con-B-Gone is a very fast acting, spray-on product that softens green (under 21 days) concrete from tools, equipment and trucks. The foaming formula allows it to be applied over large areas very quickly, saving labor, time and product. After allowing the product to soak, the softened concrete will rinse away with a hot or cold water pressure washer. Will not harm painted surfaces, chrome, aluminum, stainless steel or hydraulic cylinders.