For larger jobs it is easiest applied in a pump sprayer. Mix with water in a 1, 2 or 3 gallon sprayer and always work from the bottom and spray upwards. In some areas Slimy Grimy will work overnight when applied on siding, roofs, shingles, etc. at dusk on a misty or damp night. Enhance the look and longevity of wood, stucco, brick, aluminum and all types of siding and shingles. White towels and clothing become white again with a little original Slimy Grimy in the wash (especially in areas where there is iron oxide in the water). Rust stains disappear to show the beauty of your environment.