Seeing as how you're in Atlanta, have you considered the hornet-control benefits of carnivorous plants? I'm dead serious here: a couple of Sarracenia pitcher plants on the office windowsill, and not only will you get stunning traps that everyone will mistake for blooms (I have a whole greenhouse full of them coming out of dormancy right now, and the traps generally look like lilies designed by Jackson Pollock), but they're irresistable to hornets and wasps. Around my home, I'm very friendly toward the wasps (they do a beautiful job at keeping the oak caterpillars and cicadas under control), but I'm perfectly happy to let the hornets feed my plants of their own free will.