Indeed underwear and other soiled things need hot water to get out the bacteria and dirt. Cold water actually cannot effectively remove dirt and bacteria, and as I said earlier I forget what the cut off temperature is.
I hang all my stuff on the balcony, if the humidity is too high I put a dehumidifer out there for a few hours, that helps speed things up and I believe it uses less electrcity, though that is one electronic product I have yet to test.. Hmmmm.
I usually throw just about everything in the dryer for a few minutes, unless it is something delicate or something that will shirnk. Cat hair gets in everything!!!!! It even jammed up my fax machine last year!
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