Krud Kutter Vehicle and Boat Pressure Washer Concentrate Advanced Formula is a powerful, commercial strength formula that is ideal for cleaning boats, cars, trucks and more. This biodegradable and bleach-free cleaner eliminates road film, brake dust, algae, tar, dirt, mildew stains and other tough soils. Safe for automotive finishes and wax. Makes up to 20 gallons and covers up to 5,800 square feet per gallon of concentrate.