D/2 Biological Solution is a specially formulated biological cleaner that removes environmental pollution, dirt, and staining caused by mold, mildew, lichen, and algae.  D/2 Biological Solution is ideal for use on a variety of indoor and outdoor surfaces, including:

• Natural stones – granite, marble, limestone, slate, sandstone
• Masonry – brick, travertine, terra cotta, stucco
• Concrete
• Wood and teak
• Residential surfaces – asphalt shingles, aluminum and vinyl siding, gutters and downspouts
• Plastic and composite materials – outdoor furniture, decking, hot tub skirting
• Canvas awnings

D/2 Biological Solution features:

• Fast-acting, pH neutral and zero VOC
• Easy, ready-to-use formula contains no bleach, salt, solvents or acids
• Will not etch metal or glass
• Biodegradable and safe for use around plants and wildlife