D/2 Biological Solution - 1 Gallon

D2 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, gravestones, headstones, vinyl, and aluminum siding. 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. It is safe to use and won't deposit harmful residues! D2 cleaner has been successfully used to remove staining from a variety of surfaces including natural stones such as marble, granite, limestone, sandstone, and slate, masonry surfaces such as brick and cast stone, concrete, wood, aluminum and vinyl siding, and canvas. It works D/2 has been used successfully to clean millions of buildings and monuments. From the White House to Arlington Cemetery, D/2 is trusted to work and keep on working when results matter.