OxiClean is a safe alternative to chemical-based bleach products, as the item is comprised of oxygen bleach that uses oxygen ions to fuel its cleaning power. When cleaning your outdoor deck, the oxygen bleach is a much better alternative than chlorine bleach as it cleans any deck surface without causing discoloration or damage to plants, shrubs, soil and similar surroundings.
Mix 1 cup OxiClean and 1 gallon water in a cleaning bucket.
Rinse off your deck with the garden hose to loosen debris and buildup.
Dip a nylon scrub brush into the water and OxiClean mixture and scrub it over the deck. Continue across the deck until the entire unit is cleaned to your satisfaction.
Rinse off your deck once more to wash away all of the lifted buildup, and let the deck air dry.