Remove all items from the deck. Sweep the deck with a push broom to remove pine needles, leaves and loose dirt.
Mix 6 oz. powdered oxygen bleach with 1 gallon warm water in a 3-gallon plastic bucket. Stir the solution with a toilet brush. Wait five minutes for the oxygen bleach to dissolve.
Pour the bleach solution into a hand pump sprayer. Gently shake the sprayer to dissolve any remaining powder particles.
Spray a generous amount of the solution onto the deck's rails. Scrub the rails lightly with the toilet brush.
Spray a generous amount of the solution onto the decking. Scrub the decking with a stiff bristled telescoping pole brush. Use a small brush to scrub between decking boards.
Rinse the decking and rails with a garden hose. Use standard nozzle pressure to rinse the deck, not a pressure washer. Pressure washers can erode and crack the wood.
Inspect the deck for remaining dirt and grime. If the deck remains dirty, repeat the entire cleaning process. Otherwise, allow the deck to air dry.
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