[header] How to clean a down comforter at home [title] Keep an eye on your comforter. [step] The fabric may become worn with heavy or prolonged use. Stains, rips, mold, and other undesirable conditions may arise without you noticing. 
Look for loose feathers: down comforters are traditionally stuffed with the fluffy undercoating of geese, ducks, and other soft birds, and a flurry of flying feathers is a telltale sign that the fabric has torn. Repair tears with a needle and a thread that matches the comforter.