We have limited experience with it. The product seems to work, but we have not been exposed to it for long enough to know. The literature and MSD sheet are impressive.
Our experience is only with the application process. We have let a company use our foggers in an attic and one whole house application. There seems to be a problem with getting the material to every nook and cranny. There is no visible indication that it actually has come into contact with the mold. After application it is hard to know if it has actually killed mold or not.