Permatex Spray Nine Grez-Off heavy duty degreaser is a biodegradable, ready-to-use, water-based degreaser, formulated to quickly remove heavy duty automotive soils, grease and dirt. Non-flammable and VOC compliant in all 50 states. Suggested applications include engines, machinery, tools, workbenches, garage floors/walls, asphalt, stainless steel, chrome, condenser coils, and exhaust hoods.