Clear the counters of all items and lightly sand them with a medium sandpaper block. Applying the mineral oil on your butcher block countertops. Butcher Block 101 What to Know Before Choosing Butcher Of these, citric solvent, grain alcohol and odorless mineral spirits offer safe, quick solutions to mineral oil removal, and both they and naphtha won’t overwhelm you with chemical smells like paint or lacquer thinner. How to treat butcher block countertops with mineral oil . Two of the most common are: How to seal a butcher block countertop. Use old cotton rags to wipe on the first coat and leave to dry about 6 hours. Apply two coats of mineral oil: Ultimately, the butcher block surface would become so saturated with the animal oils that it wouldn't and. From our initial research and investigations most die hard butcher block people suggest you only need to use a mineral oil or chestnut oil to treat the wood. Wipe dry with a clean cloth. Mineral oil to be precise...