Straight, water-rinsable, natural solvent degreaser with D-limonene for extremely heavy duty degreasing and cleaning of engines, machinery tools, grills, all metals and concrete. Blend of 90% D-limonene and 10% detergent surfactants, Orange Tough 90 is 100% active. Quickly cuts through grease, oil, dirt, cosmoline, tar, rubber burns, carbon creosote, many inks and adhesives. All natural ingredients reduce costly haulaway. No petroleum distillates. No butyl. Biodegradable. Phosphate free.