D/2 Gallon Kit

D/2 Gallon Kit

Biological Solution I MB Stone Care I D2 Biological Solution

Experience the power of D/2 Biological Solution to remove environmental pollution like algae, dirt & other biological solutions with the convenient D/2 Gallon Kit.

***NOT included in sales including, but not limited to BOGO, Free shipping, etc.***


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Safe for Natural Stone

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This comprehensive kit includes a gallon of D/2, a grout brush, and a 16 oz measuring bottle with a handy sprayer.

D/2 Biological Solution is the ultimate solution for removing stubborn stains caused by mold, mildew, lichen, and algae from a wide range of surfaces. Its biodegradable formula ensures an eco-friendly cleaning process, while its pH neutral composition guarantees that it won’t harm valuable materials like marble, granite, limestone, and wood.

Whether you need to spruce up your indoor or outdoor surfaces, D/2 Biological Solution is your go-to cleaner. It effortlessly eliminates environmental pollution, dirt, and staining, restoring the beauty and cleanliness of your surroundings. Get ready to say goodbye to unsightly stains and hello to a spotless space!

D/2 is the only product developed for conservators by conservators. It has been successfully used to clean millions of buildings and monuments, from the White House to Arlington Cemetery. It was tested in a 6 year study and now specified by the Department of Veteran Affairs National Cemetery Administration.

Safe to use on:

  1. Masonry
  2. Stone
  3. Concrete
  4. Marble, Granite, Limestone
  5. Wood
  6. Asphalt Shingles
  7. Vinyl & Aluminum Siding
  8. Fiberglass, Metal, Paint, Canvas, etc.

Keep your surfaces clean and stain-free all year round 🌟
To keep your surfaces looking great after the first treatment, we recommend giving them a light spray once a year. This simple upkeep will help maintain their cleanliness and keep pesky stains at bay.

With coverage of approximately 250 – 350 square feet per gallon, our product goes a long way in keeping your surfaces shining.

Please note that D/2 should not be used in temperatures below 45 degrees. So, make sure to choose a warmer day to apply it and make the most of its fantastic results.


  1. Heavy biological deposits may require repeat applications of the cleaner to achieve complete cleaning after detachment. Alternatively, heavy growth can be detached by manual scraping using wooden or plastic tools immediately after application.
  2. This product is not part of any sales discounts or promotions including but not limited to free shipping, shipping discounts, and sales.
  1. Apply D/2 with a brush, roller or sprayer.
  2. Allow the undiluted D/2 to remain on the surface for 5-10 min.
  3. Apply additional D/2 to maintain a wet surface.
  4. Scrub the surface thoroughly with a non-metallic, short-fibered scrub brush.
  5. Lightly mist with water and continue scrubbing.
  6. Rinse thoroughly with fresh water using a hose or sprayer.

Frequently Asked Questions

How Do You Use D/2 Biological Solution?

Does D/2 Biological Solution Prevent Air Pollutant Staining?

Does D/2 Biological Solution Remove Environmental Pollution and Air Pollutants?

Where Is D/2 Biological Solution Effective?

How Do You Use D/2 Biological Solution with Wooden or Plastic Tools?

Why Should You Choose D/2 Biological Solution?

Why Should You Choose D/2 Biological Solution?

What Are the Features of Using D/2?

What Companies or Brands Have Used This Product, and What Were the Results?

Find a Pro

Thinking you need more than just a DIY option to restore your stone? We have an entire network of restoration professionals at your fingertips.