One of the few downsides to having a nearly nonstop stream of fresh fruits and vegetables in your kitchen is the appearance of the very persistent fruit fly. Try as I might to take the compost out daily, the fruit flies always seem to find a way to hang on. Our recently adopted hobby of winemaking has not helped. I see fruit flies buzzing around the airlocks on our jugs of wine, presumably drowning their sorrow over their inability to reach the sweet, sweet wine itself, and instead huffing up the powerful fermentation gasses that are regularly belched out via the airlock.
In essence, our kitchen is now an extremely popular fruit fly singles bar.
I have tried good old fashioned fly paper, with some success, and gave one of these traps a whirl, with decent results, but the surest way to catch them still seems to be leaving my cup of coffee unattended for 5 minutes. I tip my cup up to take a drink, and if I'm lucky, notice that I have a passenger in my coffee just in time to abort the sip. If I didn't already have it in for these guys, that'd do it. Not cool, flies, not cool.