Anyways, I think you should do what (supposedly) Reb Binyamin (Franklin) did. He layed out electrified wires across his room and dared the insects to contact them.
Cheery, that wouldn’t really work unless the wires were hot enough to burn the files. Since the flies are only landing directly on the wire they are not grounded and will not conduct a current.
Ben Franklin knew how to generate electricity? Or did his contraption only work when it was hit by lightning (in which case the flies would have been the least of his worries)?
42: I thought R’ Aryeh Levin was famous for that, not R’ Moshe. (I’m not saying R’ Moshe was the same; just saying that that’s who it was usually said about.)
R’ Moshe Meir Weiss tells a story of when he was sitting outside with R’ Moshe Feinstein. They each got a cup of tea and within minutes R’ Weiss’s tea attracted bugs and R’ Moshe Feinstein’s did not.