Here's EZ Stone Care's Tip of the Month:
Stone Tip of the Month
One of the most common questions we get is "How do I remove this stain?". Many times, these stains involve some sort of natural tannin, such as wine, coffee, tea, wood and sometimes ink. All of these types of stains can typically be treated with one common mixture: Diatomaceous Earth (DE) and Hydrogen Peroxide (HP). DE is a very fine, absorbent powder that is used for pool filtering, killing insects and many other uses.
HP is commonly bought at the corner drug store and has a 3% concentration. You will want 40 Volume Developer, which is 11-12% concentration. This is the same stuff used for bleaching hair at salons, and can be purchased at a beauty salon supply store.
Using gloves and a mask, mix the DE with the HP in a plastic cup into a paste-like consistency that is easy to spread. Apply the paste to the stain in question, overlapping the outside of the stain by approximately 1/2", and making the paste about 1/4" high. You can either leave the solution uncovered, or cover with plastic or Saran Wrap. In hotter, dryer climates, it is recommended to cover the solution to prevent premature drying. Leave for up to 72 hours, or until dry, then discard dry powder into a trash bin. Do not remove solution before it is dry. If the stain has only been partially removed, allow 1 day to air dry, then repeat process until stain is gone.
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