The proprietary formulation of house and siding contains "sporex", a unique additive which removes tough stains from mildew, mold, algae, fungus and moss and leaves the surface completely clean. In addition, special surfactants penetrate the surface to safely and easily dissolve the toughest stains from dirt, oil grease, bird droppings, tree sap, and acid rain. Even removes gray weathering on wood, chalking, and oxidation. Safe, fast, effective on most surfaces! Recommended for exterior siding (wood, vinyl, aluminum), roofing of all types (asphalt shingles, fiberglass shingles, cedar, tile), gutters, stucco, brick and cement block, masonry, walkways and walls. Directions for use: Rinse surrounding plants with water, before and after application. Wet the surface to be cleaned, prior to applying the product. Place detergent application siphon tube and screen filter directly into container. Open meter valve (if applicable) for maximum product flow. For reservoir machines, pour product (full strength) into pressure washer. Spray at low pressure onto a wet surface. On vertical surfaces, always spray from the top down. Allow product to remain on the surface for 3 to 5 minutes to penetrate. Do not allow product to dry on surface. Remove siphon tube from solution and rinse surface with high pressure spray thoroughly. Flush siphon tube with clean water prior to storage. Contains: a proprietary blend of biodegradable surfactants, detergents, and emulsifiers, in a water-based solution. No petroleum solvents. Caution: Eye and skin irritant. In case of contact with eyes or skin, flush with water for 15 minutes. If irritation persists, seek medical attention. If swallowed, take large amounts of water. Do not induce vomiting. Get medical attention. Material safety data sheet available. Do not mix this product with any other chemicals. Keep out of reach of children. Mild odor. Container size: 1 gallon.