Um. No kidding. Did you read the article? (Edit: that I linked to)
This year again, we released green lacewing larva in the Public Garden, the Boston Common, and Commonwealth Avenue Mall. As generalist predators, the tiny larvae (Chrysoperla rufilabris) provide a vital service by eating aphids, small caterpillars, beetles, thrips, mites, whiteflies, mealybugs, and even insect eggs.
Edit: My point, which seems to be completely lost on most people here is that no physical means of trapping insects is going to only target the problem insects. You will always capture more of the insects you didn't mean to harm. Source: me, having tried sticky traps and various oils in commercial farming settings.