Lord of the (Fruit) Flies

You know that old expression, "You can catch more flies with honey than with vinegar?" Well, it turns out that you can catch more fruit flies with pear juice than with vinegar.
Yes, sad to say, I've had a few uninvited houseguests to deal with. Those little bugs are far more annoying than the annual ant invasions of my childhood. Plus, I 'd swear that they're equipped with stealth technology. You try to swat them in midair, and they vanish right in front of your eyes!
I finally tired of jumping up and down repeatedly while clapping my hands over my head, every time I walked into the kitchen. So, now that I'm a member of eHow.com, I figured that there must be some information out there about how to fight back against a fruit fly invasion. In fact, I found several articles on that topic, from which I was able to plan my campaign to retake my kitchen:
1: Find a jar that you don't mind getting rid of.
2: Pour some vinegar into it, and add a few drops of dish detergent for reasons that my eHow sources did not explain fully.
3: Cover the open top with plastic wrap.
4: Poke a bunch of little holes in the wrap. The bugs will crawl in, and be unable to find their way back out.
5: On a whim, get another jar out and pour the leftover juice from a can of pear halves into it. Cover its top in the same way. (Okay, you can try using something other than canned-pear juice. If you must.)
At day's end, the pear juice jar trapped far more flies than the vinegar jar. That makes sense, I suppose; they are called FRUIT flies, after all, not VINEGAR flies.
And yet, the battle is not over. The last time I checked, a number of flies hadn't found the traps yet. I hope that that just means that the remaining flies are too dumb to find their way into the jars. If it means that they're getting too smart to fall for them, I may have a bigger problem . . .