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Memorial Day Sale

Now through June 15, 2022 use the discount code Memorial and receive a 15% product discount site wide on any/all in-stock items which includes the following products: • D/2 Biological Solution – 1 quart (32 oz.) Reusable Spray Bottle • D/2 Biological Solution – 1 Gallon size • D/2 Biological Solution – 5 Gallon size […]

How to Use D/2 Biological Solution to Clean a Gravestone

This video shows step-by-step how to use D/2 Biological Solution to clean a historic gravestone or monument.  Sometimes lichen & algae on a historic monument can be aesthetically pleasing, so the first question is why even clean the monument?   The simple answer is that the mold, mildew, algae, & lichens are feeding on the stone […]

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