Forget the dry cleaning tag. I've been washing wool blankets for years. Just remember that wool is hair. It doesn't absorb water like cotton does, and it has a fairly short drying time.

Wash with 1/4 cup of cheap hair shampoo.

Use a cheap hair conditoner (1/4 cup) in the rinse water.

Line dry, or dry at medium or low temps, in 10-minute increments. Most blankets will dry in 15 minutes or so, composite (artificial) materials usually in less. DON'T just twist the dial to 40 minutes and walk away, or you'll end up with a hard chunk of felt.

Line drying will give an expensive blanket a longer life. All that stuff in the lint trap used to be part of the blanket.

Sue