Purchased this elsewhere based upon claims on the label. Never again.The cleaner is supposed to be "odor free" - who are they kidding! It has a powerful, searing smell that will bowl you over if you don't have all the windows in your house/apartment open. Even then it will be hours before the aroma dissipates.Will it cure your mold problem? I have no idea. To give it the full treatment you have spray (wait), let stand (wait), wipe-off (wait), dry (wait), and then spray again. The last spray is supposed to be left on without wiping up. Due to it's smell, my wife and I didn't get that far so we don't expect any long term results.Will it cure your soap scum problem? That I can tell you. It won't. Our tile and glass shower looks the same now as it did before we applied the Mildewstain product.All and all, a waste of time, money, and nostril hairs.