DECK STRIPPER is formulated to penetrate and emulsify dirt, grease, oil, paint, and stain. This product is for use on wood and concrete surfaces. It will work in cold water and hot water, and rinses free at any temperature. The optimum cleaning dilution for most surfaces is between 1:2 and 1:4, when stripping paints, stains and sealers may use at full strength. This product contains Sodium Hydroxide. Neutralize wood by rinsing with WOOD BRIGHTENER See Product No. 60770 for details. For thicker paints use our Super Stripper Product No. 22548 or our Stipper Powder Product No. 62400.