PeelAway Deck Stripper is a ready to use, biodegradable stripper for removing oil and water based stains, clear finishes, weathered latex and varnish from pine, oak, cedar,redwood and pressure treated decks, siding and fencing. Cedar and redwood may darken after using stripper.Peel Away® Deck Stripper, 1 gal Container, Purple, 200 - 250 sq-ft/gal, Mild Odor