If a down-filled comforter or quilt is relatively new or in good condition, it should be safe in the washing machine.
Line drying is best, but down comforters can be safely dried in your dryer. Use the lowest heat setting or no heat tumble dry. Throw in a few clean tennis balls or clean shoes to help fluff it and prevent clumping. This may take three hours or more to dry completely.
Make sure your comforter is completely dry before using or storing—mildew can grow inside damp down and ruin it.
Do not over-clean your down comforter—the natural oils in the material may be stripped over time.
If your down comforter is old or is wearing out, take it to a dry cleaner instead.
Polyester fiber or poly/cotton blend.
This kind of comforter/quilt can be safely cleaned at home, unless it is very old or in delicate condition. Follow instructions on the care label for machine washing.
If care label is gone, let comforter soak in the washer for several hours before running through the wash cycle.
Add ½ cup vinegar to the rinse cycle to ensure all soap residue is dissolved.
