limestone and mold

Dear Gisela:

I wish all questions were so easy!

MB-9 is “your man”, and is the only product of its kind on the market.

You can simply spray it on the mold straight from the bottle and let it sit there for several minutes until it will do its “magic”. (Rinse afterwards.)

However, if you have a large area and would like to do it more efficiently, you can mix MB-9 with water in a proportion of 1:1 in a power washer. Keep the pressure at no more than 600 PSI and the no z z le approximately 3' away from the surface of the stone. Once again, let it sit there until the mold is gone out of sight and then rinse with water.

Ciao and good luck,