Hand-wash your board with soap and water as soon as you’re done with it. Then, pat it dry with a paper towel immediately. If you were chopping something stinky, like an onion that made you cry, get rid of odors by wiping your board with white vinegar. To remove stubborn stains, sprinkle the board with baking soda and work the surface with a lemon, gentle sponge or cloth. Rinse and dry with a towel.