Fast acting "30 Seconds" concentrated outdoor cleaner effectively restores a clean, new appearance to virtually all outdoor surfaces including wood decks, concrete driveways, brick walls, vinyl siding and more. The biodegradable outdoor cleaner quickly removes stains from algae, moss, mould and mildew without the need for a pressure washer. This outdoor cleaner is also ideal for prepping wood surfaces for painting and staining. Once mixed, simply spray on and hose off. This formula mixes 1:1 with water.