Question: My brick house was built in 1921. The bricks are a mixture of brown, various shades of red, beige and black. I had some deteriorating mortar replaced, and the handyman smeared the mortar on ...

Q. I recently wrote to you and sent pictures of my brick front steps, which are an eyesore. I subsequently took a wire brush to scrub them, both dry and wet, with no measurable results. Should I now ...

While there seem to be cleaning products formulated for any type of stain, mess, or grime you can think of, some people—for a variety of reasons—prefer to take more of a chemistry-class-approach to ...