Wool has been harvested from sheep since before the Iron Age. People had two choices: wash it, or wear it until it rots off.

Dry-cleaning was invented in the mid-1800s. That's a span of 3000 years without dry-cleaning.

I don't know about men's Armani suits, but I would (and probably have) wash practically anything else made from wood: blankets, socks, casual wear, sweaters, etc.

Wool is hair. The best advice I ever received was to wash it with shampoo and then use a hair conditioner in the rinse water (Suave is fine) (washing machine on gentle is fine -- cold water). Hang to dry, or dry in very short increments at low temps in the dryer (check frequently -- it dries quickly, even heavy blankets).

Sue