Minwax Stainable Wood Filler is a sandable indoor/outdoor latex wood filler specifically formulated to accept all Minwax penetrating stains including Minwax Wood Finish Minwax Gel Stain and Minwax Water Based Stain. The stainable and paintable latex wood filler formula is ideal for repairing cracks small gouges nail holes knot holes and other defects in all types of unfinished indoor and outdoor wood surfaces.