Crown STRP SURE Paint Stripper Gel is safer than paint strippers using Methylene Chloride or NMP and works as effectively as paint removers using these harmful chemicals. Safe for indoor use, low odor, and biodegradable, Crown STRP SURE Paint Stripper Gel is safer for removing paint, varnish, lacquer, and epoxy from wood and metal masonry and marine surfaces. Crown STRP SURE Paint Stripper Gel starts working in 3 hours. One quart size covers up to 25 square feet. Half gallon covers up to 50 square feet. Gel formula clings to vertical surfaces.