Gesh...all those dainties, floating around in the same wash water in the laundry...and if you are doing your wash at the wash and dry, in the same tub as who knows who's danties were in there before you tossed in your Tide and Bounce!!!! Come on...if they are clean, they are clean and if they are clean...think GREEN and recycle the undies too.
We should be so lucky to have so little to worry about in life that we have to worry if it is ok to have underwear as hand-me down's.