Removes unsightly discoloration of wood caused by tannin bleed in extractive wood types such as cedar and redwood, and metal rust stains. Can be used on all painted, stained, and unfinished wood surfaces. When used on weathered wood, it brings back the rich, new wood look. Ideal for exterior wood decks, siding, fences, railings, steps, and removes rust stains on all types of coated surfaces. Rinse equipment and overspray areas thoroughly with water. Covers approximately 200 Square Foot per gallon (3.78 L).