GatewayRedbirds.com

What the [expletive]. Do these things like reproduce every hour?

I had some tomatoes from my tomato plant sitting on my counter this weekend and one of them must have gotten a little old as the tomato plant has started [expletive] them out like piñatas do candy. Anyway, I noticed there were fruit flies all over this one. So, I threw it away, took the trash out, put the other ones in the refrigerator and thought nothing of it. Figured the flies would be gone as they have nothing to eat.

WRONG!! Those [expletive] are everywhere. And they're tough to catch/kill. Super quick flies or something. Or maybe the bow wave of air moves them before they are hit. Anyway, I went to make another cup of coffee and like 20 of them flew out of my coffee grinds. Coffee grinds. There are more eating those than there were the tomato. Where do they come from.

http://insects.about.com/od/insectssoci ... e-From.htm

Fruit flies are built to find fermenting fruit. Though small, they can detect the smell of ripe fruits and vegetables from a good distance away. If there's a bowl of fruit on your kitchen counter, there's probably a fruit fly or two looking for a way into your home to get to it. Because these insects are so tiny, they can get in through window screens or crevices around windows or doors. Once inside, they reproduce. Before you know it, you've got yourself a full-fledged fruit fly infestation (say that 5 times fast!).

Fruit flies have notoriously fast life cycles; they can go from egg to adult in just 8 days. That means one overly ripe tomato left unused on your counter can give rise to a small fruit fly swarm within a week. Fruit flies are also known for their persistence once indoors. They don't even need fruit to keep reproducing. Fruit flies can breed in the slime layer inside slow-draining plumbing, or on an old, sour mop or sponge. or coffee grounds.

Nuke the site from orbit. It's the only way to be sure.

Edit - Did a search and I have way overused that line here. Why stop now though.