In a study widely reported last year, the U.S. Apple Association estimated stink bugs caused $37 million in damage to apple growers in Maryland, Pennsylvania, Virginia and West Virginia in 2010. Hepworth, the organic farmer, has worked with Jentsch to install a contraption that lures the insects at night with a bright spotlight from behind a plastic screen covered with Tanglefoot, a sticky compound that would adhere the bugs to the plastic.