Klean-Strip Green Paint & Varnish Stripper contains no Methylene Chloride or N-Methylpyrrolidone, it is low odor, safe for indoor use and stays wet and active up to 24 hours Use to strip multiple layers of latex paint, oil-based paint, varnish, lacquer, wax and stain from wood, metal and masonry surfaces Comes in easy to spray application for precise use, shake well before spraying and apply a thick coat for best result After 30 minutes, scrape a small test area to see if finish is ready for removal, let the stripper do the work For oil-based coatings allow additional time up to 24 hours, gently scrape in direction of wood grain with a plastic stripping tool For stubborn areas, use an abrasive stripping pad sprayed with Klean-Strip Green Paint & Varnish Stripper, a toothbrush, toothpick or stripping brush will help remove old finish buried in recesses You may use water as a wash to remove remaining residue, surface should be completely clean and dry before refinishing