Careful!
You're not supposed to mention the garmies around here ... and whatever you do, do not post a picture of them!
Besides, deferring to some of the pinged experts, I don't think that you're supposed to wash them. Instead, it is my understanding that you wear them until they are a lost cause. Then you burn them in a holy fire after you cut out the sacred masonic symbols and righteously bury them in a consecrated place.
Mitt’s response to the MTV question boxers or briefs? “Neither acttually, mine are magic.”
Mormon garments can (and should) be washed, although most LDS I know wash them completely separate from other clothes but I don’t think it matters.
To dispose of them, the sacred symbols are to be cut out and burned and the rest can be tossed, however some burn the whole things.
http://www.ehow.com/how_6002197_dispose-temple-garments.html
Binger, however, uses his as car rags.