Formulated to remove oil-based finishes from all wood surfaces such as cedar, redwood, pine, cypress, fir and pressure-treated wood. Biodegradable. Neutralized with Cabot problem-solver wood brightener #8003. For use on wood decks, siding,fences, railings, steps and outdoor furniture. One gallon of wood stripper will strip 150-200 sq. ft. of weathered oil finish.