Loudspeaker idea has merit. Crank up some Johnny Cash and then just let it loop at the 5:15 point of this one
http://www.youtube.com/watch?v=HVyYsc2UfPU
Any other year and they would have been killed off by now like those annoying fall aphids that are taken care of by the elements. A mild fall with very little precipiation makes this the perfect storm for these vultures. Bring on the cold and smoke them out of there
