Mean Green® House, Deck & Fence Pressure Washer Ultra Concentrate was developed to clean, degrease, and revive wood, brick, vinyl & aluminum siding, stone, stucco, gutters, roofing, deck & fence, both wood and composite. Use Mean Green to remove stains caused by mold, mildew, algae, moss and fungus, grease, dirt, oil, acid rain, tree sap, and bird feces. Ready to use, concentrated formula! This product can be used with pressure washer equipment or manually to clean many exterior surfaces. Cleans, degreases and revives exterior surfaces. Removes mold, mildew & algae stains. Covers more surface area than other brands: cleans 7500 square feet! Makes 30 gallons (29:1) with water. Biodegradable & safe to use near people, pets and plants.