Most modern sport-oriented wool (using merino) these days can be machine washed. So just wash them in a different load using wool detergent (Eucalan, Kookaburra

Most modern sport-oriented wool (using merino) these days can be machine washed. So just wash them in a different load using wool detergent (Eucalan, Kookaburra, Nikwax), and lay flattish to dry. Use a garment bag if you have a top-loader with an agitator.