I am wondering, since bed bugs appear to be very common this year, what other pilgrims do who have large quantities of merino wool garments which should not be treated with very high heat. Could they be sprayed with permethrin, left for some time, then washed? I suspect that this is what I will do with all my merino garments when I get home. I remember one occasion when a helpful friend whom I was visiting after a mountain excursion put all my dirty clothes through the washer and dryer and retrieved one very shrunken woolen undershirt for our mutual laughter. But my budget will not permit me to laugh at the loss of most of my hiking clothes (wool socks also do not like hot wash and dry). Any suggestions?