You don’t have to be afraid to wash wool, you just have to be careful. Depending on the size of the item to be washed put enough hot water in a basin or sink with just a drop of dishwashing detergent. Swish the detergent just once or twice, don’t make bubbles. Lay the wool item in the basin and STOP! Just let it lie there for a few minutes or so, don’t overdo it on the time but don’t do too little. The detergent will lift out the oils on it’s own without your help. Carefully lift the item out, supporting all of its weight. Don’t let any parts dangle. Lay it to the side on a towel. Fill the basin with rinse water and lay the item back in the basin. Do this two or three times or until the water is clear when you put it in. You can let the item drain in the basin after letting the water out or if it is a small item move it to a colander. After most of the water has drained out, move the item to a large absorbent towel, roll it up into the towel and press to remove excess water, repeat until the wool is damp. Lay the item out flat on a screen or another towel, shaping it gently back to its original shape and let it dry.