white powdery substance on garage floor?
I have been washing and washing my garage floor, using bleach, pinesol, anything I can to kill mold or mildew. Now I have decided this is not mold or mildew, but something coming from the cement floor itself. What can I do to get it to stop. It truly looks like mold. I live in Hawaii, and walking barefooted leaves foot marks, and floor always looks dirlty.
J. M. Leal, June 2010