How to Use Muriatic Acid Safely (and Where You Should)
by Elizabeth Yuko from Lifehacker on (#5TJQ9)

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 household cleaning, working directly with the acids and bases used to make those products.