Clean up your roof with Spray & Forget Super Concentrated Revolutionary Roof Cleaner. This roof cleaner uses a fast-acting formula to remove stubborn black streaks and stains caused by algae, mold and mildew – delivering results in minutes, not weeks! Packed in a 1-quart hose-end bottle capable of reaching the second story and cleaning 400 - 600 square feet. * Spray & Forget is an ideal roof cleaner for asphalt shingles, wood shingles, slate shingles, clay shingles and tile shingles. DIRECTIONS FOR USE: 1) Attach hose to bottle and ensure that nozzle is in the “off” setting before turning on water. 2) Rinse surrounding plants with water. 3) Turn nozzle to “clean” and spray roof. 4) Wait 1 minute while foam works on stains. Most stains will turn orange when cleaning. 5) Turn nozzle to “RINSE” and spray until orange color is gone for more immediate results or allow rain to rinse over time. 6) Repeat if necessary (darker stained roofs may need multiple applications). 7) Rinse surrounding plants, gutters and decks with water when finished. Use only as directed. For outdoor use only. Inspect roof prior to stepping or walking on. Make sure it is dry and clear of debris. Avoid contact with eyes and skin. Use eye protection and chemical resistant gloves when applying. Wash thoroughly with soap and water after handling. *Results may vary depending on soil level.