Reader G.R. writes: "My apartment has a serious mold problem. The bathtub is built in such a way that there is a space between the tub and the wall and water can easily get underneath and does not drain well.

"I have already dealt with this problem once. My coworker told our manager (our company rents these apartments for their employees), and they hired some people to remove our tubs; we had to clean the mold ourselves. When the men came to remove the tubs I asked them what I could do to prevent this mold from coming back, and they told me essentially that I just had to clean it every now and then.

"Well, that's not OK with me. Now it's back in full force. I can actually smell it when I walk in and I'm getting headaches.