Try this handy solution for keeping your siding looking like new.
Spray wood siding with Clorox® Outdoor Bleach. Spray to remove built-up grime. When finished, rinse treated and surrounding areas thoroughly with a garden hose.
For outdoor fabrics or painted, stained or dyed surfaces, test colorfastness before use by applying solution to hidden area. After 15 minutes, blot dry. No color change means that material can be bleached safely.