Hard-water stains

To remove hard-water stains from sinks and their metal fixtures, use a sponge to dab some full-strength fabric softener on the areas. Let sit for about 15 minutes, then wipe with a damp cloth. The softener’s fatty acids quickly dissolve the alkaline stains in porcelain and metal, and the clear coating that remains on the surfaces will prevent mineral and soap residue from sticking.