The thermal death point for cockroaches/bedbugs is 46°C (115°F) for 1 hour of exposure. If you have an infestation, one way to KILL THEM ALL is to raise your entire house beyond 115°F for at least an hour. (Of course, you must first remove CDs, etc.) Yes, this really works, and in fact there are companies that do it. It works best if you dust the perimeter of rooms with diatomaceous earth, to help catch any that might try to escape.

The more you know, etc.