I've been a top end tile setter for over 35 a long time Lemon juice operates to take the black off of Uncooked oak...I figured out it the tough way, the stains revealed glance being the identical sort, just wipe pure lemon juice on the area and let it dry http://bookmarkrange.com/story9237249/the-facts-about-residentialpainting-contractors-deck-painting-service-concord-revealed