A few squirts of fabric freshener and a couple of tennis balls is all it takes to have fresh, fluffy, plump comforters. Just spritz the freshener on the comforter as it lies on the bed, roll it up, toss it in the dryer with a few clean tennis balls and let it bounce around for 20 minutes or so. Any staleness evaporates with the freshener, the balls work to thump the down out of the corners and redistribute the feathers in each "cell,"
and the heat kills dust mites and other nastiness.