I love this product because it has helped cut my bathroom clean-up time which means less scrubbing for me and more me time. Lichens digest stone, and yes, they are live biological growths that need to be removed so they don’t eat away at the stone. Monument slab cleaning AFTER – June 2014 NOTE – I did some overall light scrubbing one month after application by my choice, due to the fact that this is a slab monument that’s parallel to the ground and accumulates more encrusted bio-matter.

Enviro Klean ReVive is a cleaner manufactured by PROSOCO, a company dealing in maintaining stone since 1939. My wife was very worried when we first used the D2 on a granite base and marble statue at our local cemetery, We were getting orange and yellow colors and she was worried we were staining the monument. I am trying to find the right amount to send to a volunteer who lives near my a few of my ancestors' headstones (a 14-hour drive from my home). The NCA entered into an agreement with the National Center for Preservation Technology and Training, NPS, to evaluate marble cleaners in an effort to minimize damage to historic headstones.I think the bio-material had been on the stones for decades if not a century, but reactivating the D/2 with water and scrubbing a little definitely made the stones cleaner. NOTE: Heavy biological deposits may require repeat applications of D/2 to achieve complete cleaning after detachment. Microbiologists at Harvard University evaluated samples for regrowth of microorganisms including bacteria, fungi, and algae. They are frequently used for common household soaps and cleansers, but can also serve specific purposes in a lab setting. Detergents based on polyoxyethylene and similar compounds contain a neutral, polar head group and the tails are composed of hydrophobic oxyethylene chains, or, in some cases, ethylene glycoether chains.

We recommend when using this product that the user should use the correct equipment and wear the appropriate protective clothing and we are pleased to advise that the items shown below are suitable for this task.It was originally built for Lever Brothers and became the MIT Sloan School of Management in the 1950’s. Those not in favor of this product point out reasons not associated with easy button reasons of convenience and manufacturer’s claims.