Q. I want to replace a lot of caulking around the outside of my house, especially around windows and doors where I suspect there are air and water leaks. Much of the old caulk is cracked, discolored ...

Dear James: As hard as I try to keep it clean, there continues to be some dark mildew on the bathroom caulk. Should I just remove the old caulk and redo it? — Nick H. Dear Nick: You can continue to ...

Dear James: I am a real stickler about keeping my bathroom clean, but the caulk around the bathtub and sink always has black mildew. Is there anything I can do to stop it, and how can I remove the old ...