I guess seeing is believing? Here's our house. Notice the mold is around the garage? No ozone there. Our living area has no mold. So you tell me why when it used to be worse than the garage. And it all dissapeared within three months after we started using ozone. And by the way, my wife's cancer did the same thing within that same time period. //www.curezone.org/forums/fm.asp?i=333909