Wool is self-cleaning and hardly needs to be washed. Airing outdoors or lacks sufficient. If you want off of bacteria you can woolen clothing or (bottom) blanket also put half an hour in the snow. Possibly on beat with a carpet beater. (In furs or blankets). For retrieving knock it off just as the snow, in a cool place (not the heating so! ) to let you dry and your wool is again completely fresh.