Helpful Homemaking tip...:
Do you have a discolored or otherwise (unintentionally) stained wooden deck? There are quite a few products available to cope with this. Commercially available liquid concentrates and powders contain a non-chlorine bleack or oxalic acid base, often times with a detergent mixed in. Products that are bleach-based eliminate molds and milders. Acidic solutions can handle stains and wood-graying. Other products will darken redwood, cedar, and similar woods, so do your best to test on an inconspicuous spot beforehand. Make sure to wear the proper gear too: goggles, work clothes, and rubber gloves, as some of these chemical are quite toxic.