Generally, we advise that wool blankets should be dry cleaned. Some light staining by water solubles can be removed with luke-warm or cold water after which the blanket can be hung to dry, as below. To avoid shrinking and misshaping the wool, it is important not to twist or wring the blanket out. There are spot cleaners on the market for wool. These should be used in accordance with the manufacturer’s recommendations.
The use of washing machines or tumble dryers, even on delicate settings, is not recommended.