I have a friend who bought shirts at Goodwill and brought home bedbugs. She had taken the shirts directly to the washer and dumped them in with oxyclean and something else, hot water and hot dryer. She took them to her sewing room which is a sitting room off her bedroom. Within 2 weeks they were in every room in her house. She had them fumigated, not once but twice. She says she hasn't seen any so far but thinks they came from Savation Army clothes she bought for quilting.