D/2 can be safely used on most treated wood substrates to remove dirt, soot, pollution, and biological discoloration. Cleaning with D/2 can reduce recurrence of biological growth and, because D/2 contains no acids, bleach, or salts, it will not discolor or damage treated wood surfaces.
D/2 can be safely used to remove dirt, soot, pollution, and biological discoloration from most masonry surfaces. Brick, concrete, granite, sandstone, marble... you name it! D/2 has been used since 1995 to clean historic masonry buildings, World Heritage Sites, and important monuments around the world.
Vinyl and Canvas
D/2 can be safely used to remove dirt, soot, pollution, and biological discoloration from aluminum and vinyl siding. It can also address these contaminants on canvas and and other exterior fabrics. Although it is not a general purpose cleaner, D/2 has seen use on a variety of substrates that require a sensitive, non-acidic solution.