M-1 HOUSE WASH CONCENTRATE GALLON | M-1 House wash concentrate gallon contains No bleach! Contractor-grade and can be used with pressure washer. Cleans 8800 sq ft. Biodegradable. Excellent for any painted surface, painted aluminum, Masonite, wood decks, vinyl siding, brick, concrete, painted/unpainted cedar, outdoor furniture, removes chalking & oxidation.