At first I thought that all the positive reviews were bought but here determined. I could not imagine that the mold remover so quickly, easily and effectively be written to like in the reviews the best of intentions. But I was taught. We had a Moldy spot on a wallpapered wall. When I applied the mold remover the site was initially russet and I got even slightly panic. But after a few seconds was suddenly nothing more to see from the mold. Crazy how fast it worked! After a while, then the mold stop it now and we hope that the mold will not soon come back! Bin completely thrilled !!