Size: 4 x 1 Gallon
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 including monuments, sculpture ...
Reviews
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D2 is what i use to clean my family tombstones. It works well and i wouldn’t use anything else.