MOLD ARMOR E-Z Deck Fence and Patio Wash will make your deck bright again within minutes. This outdoor mold and mildew killer and stain cleaner uses a bleach-based formula that cleans and brightens exterior surfaces dulled by the presence of mold. Ideal for use on decks fences painted/sealed wood composite PVC restored and resurfaced finishes. Finally a deck wash solution that is easy to use - simply spray on with a garden sprayer wait 10 minutes then wash off. No scrubbing necessary! This deck wash removes mold mildew and stains to restore the natural look of weathered discolored wood. Great for surface preparation prior to painting. This mildew killer and composite decking cleaner does all the work so you don t have to. Keep out of reach of children and follow all directions carefully.