Krud Kutter Vehicle and Boat Pressure Washer Concentrate is a safe and effective cleaner for all vehicles including ATVs, Go-Karts, RVs, boats, trailers, cars, trucks, tractors, and vans. It penetrates and loosens road film, dirt, grime, and algae or mildew stains without scrubbing. The biodegradable, bleach-free formula is tough on stains yet safe for automotive wax and finishes. This concentrated formula makes up to 20 gallons and contains anti-corrosive agents to protect pressure washer parts.