The flag you've been flying since last fall is flagging, its broad stripes and bright stars dulled by dirt and dust. It's time to take a cue from the Smithsonian National Museum of American History, which is in the midst of a $5 million conservation of the original Star Spangled Banner that inspired Francis Scott Key back in 1814. Thankfully, restoring your own flag won't take nearly as much time or money.

Soak nylon or polyester flags in warm water with a mild detergent, like Woolite, for five minutes, then machine-wash. (Cotton or linen doesn't need to be presoaked.) Roll the flag in a towel to wring out the water; air-dry before flying.

If your flag is tattered or torn, the United States Flag Code mandates that it be replaced. Check the American Legion website (www.legion.org) for proper disposal options. Then buy a new all-weather flag, like this three-by-five-foot nylon one ($25, www.carrot-top.com).