Poll...

[telophase]

...but not here. cicer made a poll about the annoying noise in this post over here.

Comments

[trobadora]

Ouch. Now my ears are ringing. :-(

[sub-divided.livejournal.com]

I can hear it, but it doesn't bother me. Much.

[fuchsoid.livejournal.com]

I can't hear it at all, but then I haven't been able to hear bats for years, either. It seems a bit harsh to play a sound that gives people headaches just to drive them away, though. I did hear of shopkeepers using opera or Frank Sinatra recordings as a teenager-repellent, which sounded funnier and less painful.