If your wooden deck looks a little lack luster, but not bad enough that you want to stain it, brew some black tea! Steep 5-10 black tea bags in 2 quarts of hot water and cool. Use a mop or cloth (wrung very well) dipped into the tea and go over a small spot at a time, wiping each area with a dry, soft cloth or paper towel before moving on. The tannins in the tea will slightly stain the wood and blend in any blotches.