An electric fly-swatter, over at Built on Facts
Press the button on the side and swing it at the fly in the air; there’s a spark and a pop, and the fly falls out of the sky like a little brick. No mess, and dementedly entertaining (I’ll admit it). Yeah it’s a little redneck, but effectiveness is effectiveness.
Redneck? Surely you jest. What is needed now is a little empirical testing, a la Colbert’s fun with a spark coil.