Living in Florida, every year I have to hand scrub my patio furniture to remove the mold and mildew. I purchased this product online at Walmart.com and noticed after I sprayed my storage boxes, the over spray cleaned the brick pavers too! I tested a small area on our shed, and the mold and mildew just fell off even before I squirted it with the hose! Didn't have to use the power washer either; just the garden hose! Buy it! You'll see the instant results too!