A new report in the Journal of Medical Entomology has confirmed our worst fears: Big Apple bed bugs have developed nerve cell mutations that make them almost impervious to pyrethroid toxins, such as deltamethrin, commonly used against them. Toxicologists at the University of Massachusetts Amherst and Korea's Seoul National University have conducted extensive tests on the resilient bastards, and it appears that New York City bed bugs are now as much as 264 times more resistant to deltamethrin than easier to kill bugs in Florida. Of course, Florida is where bed bugs retire to suck blood in their old age, so it figures they'd have a higher mortality rate there. But up here, they've totally gone rogue, and the Times editorial board is calling for "a task force to figure out how to stay ahead of an army that seems to be growing every year."