Get the most out of your deck prep before staining with Cabot® Wood Brightener. Formulated to remove unsightly discoloration of wood from tannin bleed, this brightener also removes nail and metal rust stains. The ready-to-use formula does not need to be diluted with water and can be used on all painted, stained and unfinished wood with great results. Bring back the rich, new-wood look on weathered wood with this brightener.