Yeah, but Clinton, the whistle only comes out at their end at the volume they've set. It's not really as annoying to them as it might seem it should be.

Similarly with quite a few other suggestions - folks seem to assume that everyone has caller id, call waiting, etc, all of which would require me to pay for extra tools I don't otherwise need, just to be nasty to vermin. Seems like the better solution is - exterminate them and be done with it.

John