With the blahs and chill of winter finally behind us, now is a good time to launder down feather items like jackets, gloves and comforters. But the secret to getting them extra clean and super fluffy? Be sure to wash them twice. The reason down feathers clump after washing isn't because they can't dry completely; it's because laundry detergent hasn't washed out of the feathers, which forces them to clump. So wash your down items with detergent, and then do it again with no detergent to get out all the laundry soap. Then dry each piece separately using tennis balls, which helps fluff the item. They'll be clean and ready for next winter.