OXcon by Perma-Chink is a powerful blonding agent that brightens wood surfaces and returns gray, weathered wood to a fresh, clean appearance. Also removes rust stains from around nails, spikes, and screws. Use on logs, decks, porches, railings, and other weathered wood surfaces. Not for spot cleaning since it may cause blotching of the surface. Coverage: One gallon of diluted OXcon will clean 200-500 sq. ft. of wood surface. Dilute 1 part OXcon with 4 parts water. Do not use a metal container for mixing. Made in the USA.