When residue builds up on an iron, stop everything and clean it—or you might just mar your couture next time you press laundry. Apply a paste of baking soda and water to a cool iron, and rub it into the soleplate until stains are gone. To remove mineral deposits from steam ducts, use pipe cleaners. Finish up by filling the water reservoir with a 50-50 solution of vinegar and water, then turning the iron on high for 15 minutes. Cool it down, then dump out the liquid. Repeat with plain water.