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D/2 Biological Solution - 1 Gallon


Size: 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 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.

D/2 Biological Solution is effective for removing harmful biological and air pollutant staining from many building materials including masonry, marble, granite, limestone, brownstone, travertine, terra cotta, concrete, stucco, wood, canvas and vinyl & aluminum siding.

Check out all the of the users of D/2!: Including The White House, The Veterans Administration, and the Congressional Cemetery. 

Safety Data Sheet     SPECS


Ask a Question
  • If i use this product will damege the glass and a metal?

    No, D/2 Biological Solution will not damage anything that it's used on.

  • What is the shelf life of D/2 one gallon unopened. Also D/2 one gallon opened. Thank you.

    The shelf life on D/2 is 5 years, opened or unopened.

  • Is it safe for plants and grass?

    Yes it is safe in environments with plants and animals.

  • Do we use the D/2 straight out of the gallon bottle or dilute it?

    For long term or stubborn staining of biological growth it will be most effective undiluted. 
    However for less aggressive biological staining, or if you're re-cleaning stones that were recently cleaned you can dilute up to 50% water.