Yup.

However, not on single, fighter-type bicycles, only on our tandem, and driven by stoker use. Basically, one blast from this will stop dogs in their tracks, get Grandma's attention, and will let cars know that you are there.

I've been tempted to use it on some doggies who are insanely interested in my riding by them at a dangerous curve on my commute, but I've managed to restrain myself so far.

Air Zounds works great.

Enjoy,
Tom

P.S. as I can achieve 100 db with voice activated built-in alarm (HEY!!!) I usually settle for a little ding ding bell to alert elderly people that I am about to kill them by running them (and their little doggy, Toto) over. Worked this morning....