A major breakthrough in house wash technology. The proprietary formulation of Krud Kutter house wash 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 and effective on: recommended for exterior siding (wood, vinyl, aluminum), roofing, gutters, wood fences and decks, stucco, brick and cement block, masonry, concrete driveways, walkways and walls, even patio furniture and boats. Directions for use: For best results use on a wet surface. When used in pump sprayer dilute 19:1. Hose end sprayer: Attach garden hose to back of sprayer with valve in "OFF" position. Turn on water to the hose. With valve in "RINSE" position wet the surface to be cleaned. With valve in "CLEAN" position, apply the cleaner to the surface from the top down. Allow to work for 5-10 minutes. Do not allow to dry on surface. Rinse off treated surface with valve in "RINSE" position. Turn hose on full pressure for best results. Rinse surrounding areas and vegetation with water. On extremely soiled or mildewed surfaces, it may be necessary to scrub with a bristle brush, and a second application may be needed. Contains: A proprietary blend of biodegradable surfactants, detergents and emulsifiers, in a water-based solution. No petroleum solvents, bleach or ammonia. 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. Do not mix this product with any other chemicals. Keep out of reach of children. Mild odor. Container size: 1 gallon.