How does one clean goose down duvets?

Noisy, but so easy! 1) Wash your quilt or throw ALONE in the washing machine on GENTLE cycle (warm temperature). 2) Use detergent, as usual. Do not use bleach. (Your item will be quite soggy and limp after washing, but do not worry!) 3) Machine-dry the quilt or throw ALONE. (Toss three brand-new/clean tennis balls in the dryer with it.) They will bounce around and fluff up your quilt or throw. 4) You may have to run it through a few drying cycles, but it will come out clean and puffy, just like new. NOTE: I keep a can of clean tennis balls in my laundry room, just for laundering feather-filled quilts, throws, jackets. Etc. Learn more about this author, Linda Ann Nickerson.

Taken from http://www.helium.com/items/198889-noisy-easy1-quilt-throw