Buster, thanks for the interesting experiment.

I didn't think rayon was biodegradable either. So I looked it up on Wikipedia (by no means a totally faultless source of information). According to the article I read, rayon is not a natural fiber but not a synthetic fiber either. It is made by processing cellulosic fibers with chemicals and extruding the resulting viscose goo through a spinneret to make the filament which is woven into the fabric. As far as the durability of rayon the article says, "The durability and appearance retention of regular rayon are low, especially when wet; also, rayon has the lowest elastic recovery of any fiber." So it will eventually fall apart but I think it would take quite a while for microbes to break it down further if at all. Maybe better than truly synthetic fibers, but no better than using wool. I can't see anyone using those fabrics as wipes (unless it was an emergency). "Hey, where are your socks?" <img src="/forums/images/graemlins/laugh.gif" alt="" />