D/2 Biological Solution
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 and headstones. A contact time of only 10 to 15 minutes, followed by scrubbing with a soft nylon or natural bristle brush, will loosen most biological and air pollutant staining.
• Fast acting: 10 to 15 minutes contact time for great results
• Contains no acids, salts or chlorine
• pH neutral
• Will not etch metals or glass
• Safer to use around plants