The old expression, “you can catch more flies with honey than you can with vinegar” may not be true when it comes to fruit flies. To see what I mean, check out this experiment at Lifehacker Labs: Capture Fruit Flies with a Cup and Apple Cider Vinegar. It turns out that the apple cider vinegar is just what you need. And now that it is harvest time, you may start having fresh fruit and fresh fruit flies appearing in your kitchen. Now you know how to banish them. Good luck!
(discovered via the Cool Tools section of Kevin Kelly’s site.)