Maintaining our finish is easy. Clean with a damp cloth, soap and water. Do not immerse for more than a few seconds in water or place in a dishwasher. Periodically apply mineral oil (available at drug and hardware stores) with a cloth and allow it to soak in. After 10 minutes, remove surface oil with a dry cloth. After heavy use the surface of our boards and trays can be restored to the original finish by sanding with a fine sandpaper (220 grit). After sanding apply mineral oil.