three weeks this page from the University of Minnesota Another page from the same source New York State integrated pest management, this page from the University of Minnesota Bed Bug Management FAQs reports https://nysipm.cornell.edu/whats-buggin ... ug-faqs/#8 500 in a lifetime luggage use heat Another page from the same source more likely to harbor the critters seriously itchy skin the same source the same source this page from the University of Minnesota reports this page from the University of Minnesota the right strategy luggage less likely to hide in your clothing Cornell College of Agriculture and Life Sciences