Krud Kutter Deck & Fence Pressure Washer Concentrate provides the ultimate clean for your wood or composite decks and fences in a safe, eco friendly formula. Non toxic, biodegradable cleaner includes a special additive to remove tough stains and will not harm people, pets or plants. Concentrate makes up to 11 gallons of solution for use on vinyl, aluminum and wood siding, awnings, gutters, porch screens, driveways, pool areas, engines, equipment and more. Restore the original look on your deck/fence with ultimate stain removal concentrateIdeal for use on wood/composite decks and fences to dissolve dirt, oil, grease, bird droppings, tree sap, acid rain and moreBiodegradable, water based formula contains Sporex to remove tough stains from mildew, mold, algae, fungus and mossConcentrate covers up to 3,200 square feet when diluted and works in 3-5 minutes