This 30 seconds Outdoor Cleaner is a fast acting cleaner that removes stains from algae, mold, and mildew. This 30 seconds Outdoor Cleaner instantly removes dirt and grime from virtually all outdoor surfaces. The 30 seconds Outdoor Cleaner specifically formulated to be effective on all exterior surfaces including decks, siding, patios, walks, porches, steps, lanais, pools, boats, recreational vehicles, tents, patio furniture, awnings, and more. This 30 seconds Outdoor Cleaner does not require a noisy pressure washer, and it's safe to use around lawns and landscaping. Will not stain concrete. Non-corrosive to metals when used as directed.