This thread is so old that if OP had just sealed up his condo and moved to one of his vacation homes back then, he'd be about ready to move back next month because it only takes ~300 days without blood to starve the bugs without any special application of heat.
While they are now resistant to all approved insecticides, I should point out that even insecticides banned for indoor residential use will degrade on such time scales. The Sevin (carbaryl) mentioned in this thread has a 72-day half-life but only 3.2 days in the sun. Bayer Advanced (deltamethrin) has a 33-day half-life but photostable for 6 days. Malathion has a 17-day half-life but photodegrades in just 1.5 hours if not bound to dirt, suggesting you could even use a sunlamp to clear it from walls and floors. However while it isn't grampa's DDT, Ortho (bifenthrin) has a 250-day half-life and sunlight only drops this to 147 days.
After the City of Chicago was named the most bedbug infested city in the nation recently, the City Council passed an ordinance mandating
a "duty to exterminate."
Condo owners are required
to immediately notify the condo association in writing, and the association is required to prepare a management plan + hire a professional.