Our tables were so dirty. Pencil marks, snack food smears and dried spills, and many of the children have colds or runny noses. So I said, "Enough Already!", and pulled out a can of shaving cream. Five minutes later, the cream had been rubbed into the wood veneer, then buffed with paper towels. Not only does the room now have a nice, fresh scent, but the kids were able to work out some of that excess energy.