About DeckBrite® Wood Cleaner & Coating Prep Instantly brighten decks and other exterior wood with Rust-Oleum® Wolman™ DeckBrite® Wood Cleaner & Coating Prep. This 100%-biodegradable, oxygen-activated powder concentrate foams up, clings to vertical surfaces and lifts dirt in just 10 minutes. Safest, “greenest” product for cleaning outdoor wood - non-toxic, non-acidic, chlorine-free! Restores UV-grayed, dirty, mildew-stained wood surface to a bright, like-new appearance. Fast-acting foaming action works in 10 minutes!