this trap works,,,, cut a hole in the bottom board and attached a jar that is one-third filled with honey. Over the opening, bolt a square piece of Plexiglas elevated by a couple of washers. There has to be just enough room to allow adult beetles, but not bees, to crawl under the Plexiglas. Many of the beetles eventually wind up in the jar. This trapping idea is passive in nature and requires no chemical use. It could be modified in a number of ways by beekeepers and integrated into colony management on a permanent basis.