Moss Out Heavy-Duty Cleaner
Removes algae, mold, and mildew on decks, roofs, siding, windows, concrete, and patio furniture. Superior alkaline cleaner. Biodegradable, no chlorine, no ammonia, no phosphates. Concentrated formula cleans up to 4000 sq. ft. per gallon concentrate. Ideal for pressure washer use. Safe for people, pets, and plants when used as directed. Contains Sodium Hydroxide.