Size: 1 x Quart (32oz) Reusable Spray Bottle
D/2 Biological Solution is a biodegradable, easy to use liquid that removes stains from mold, algae, mildew, lichens and air pollutants. It is effective on marble, granite, limestone, brownstone, travertine, masonry, terra cotta, concrete, stucco, wood, and other architectural surfaces includi
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D2 is “Gold Jerry, Gold!!”🤣
Tom · September 30, 2026
Does not work on hard water stains. Only for organic growth which we do not get in the desert. The website should state this more clearly.