Owatrol Cleaner & Brightener 1LDeck Cleaner is a powerful cleaner and brightener that removes ground in and surface dirt while restoring a bright, vibrant look to fiberglass and grey, weather beaten marine wood such as teak and mahogany that is unfinished, to its natural colour without bleaching. Unlike bleach or chlorine based cleaners, Deck Cleaner will not damage the woods fibres. Deck Cleaner is fast acting and can restore the original colour of your wood surface in as little