Got this from Influster for my honest Review love the fact that this can be used on: 

Surfaces used on: Asphalt; Brick; Cement; Ceramic; Clay; Composite; Concrete; Fabric; Fiberglass; Flagstone; Limestone; Marble; Metal; Natural; Painted Surfaces; Plastics; Rubber; Sandstone; Slate; Stained Wood; Steel; Stone; Stucco; Teak; Textured Surfaces; Tiles; Tin; Vinyl.

I used mine on the deck and it got all the mold off. Which it took awhile for it to come home after a couple of washes.