I keep pondering how they ended up in the bags of fabric since there were no dead animals or a food source? But, yes, bedbugs is a REAL concern. We had the pleasure of being eaten alive in a $300 per night hotel room in Morro Bay, CA. We found out later the place had a history of complaints and we kept 12 or so in a jar in case we needed legal guidance. We got our money refunded but the horror of that night and discovering those bedbugs will stick with us. Doing all the research we had to do we found bedbugs live in fabric and mattresses coming out at night to feed on blood. The easiest way to transport them into your home is buy purchasing furniture, clothes, bedding and fabric with them. They are like pin dots when small, so can't easily be seen by the naked eye. I'm all for a good bargain, but immediately in the wash and hot dryer!!! But, 200 yards of fabric for $40 with no harm done, was worth it. If I don't think about it too much <shudder>.