We’ve got the details on how to revive them. Cleaning matted dryer balls restores absorption and helps clothes dry more evenly. Wash dryer balls in a mesh bag with hot water and gentle wool detergent.
Wool dryer balls reduce static cling and help the laundry dry more quickly and evenly. Over time, all that bouncing around with wet clothing causes dryer balls to become matted, felted, and stiff.