Q: The marble threshold for my shower has reddish marks. How can I remove them? Annapolis, Md. A: Marble can develop reddish marks for a variety of reasons, such as spilled red wine, bacteria or ...

When mold and mildew show up in your shower, you’ll want to get right to work. If not dealt with swiftly, the problem will only escalate—along with the potential for health risks and household damage.