Heavy-duty all-purpose phosphate-free cleaner that cuts through heavy deposits of greasy dirt and grime from interior/exterior. Concentrated - 1 quart makes 4 gallon of cleaner or 1 gallon makes 16 gallon of cleaning solution. Excellent for preparing surfaces before painting. Requires no rinsing. Ideal for use with power washers. No rinsing is required. Removes mildew stains when mixed with bleach. Recommended for cleaning walls, woodwork, ceilings, concrete, metal, vinyl, and aluminum siding.