Hi, we had some renters and now that they are gone we want to do a deep cleaning. We are finding black spots of mold in the bathtub, especially in the grout at the corners for the shower and I can’t get rid of them. My husband tried bleach and it didn’t do the job as well as other cleaners. I read somewhere I should spray peroxide but same result..none..anyone has an idea as to how to get rid of this ??
Thanks