Wipe off the dirt from the furniture with a soft cotton cloth. Also avoid using the excess water for cleaning, take moistened cloth to wipe off the dirt. Avoid chemical contact with the furniture as it may harm the natural finish and further the durability. Also, make sure to avoid application of polyurethane paints on the furniture. Scratches, burns, residue and any other surface damage can be taken off with a fine-grit sandpaper. Reapply mineral oil after sanding.