Fruit flies are really stupid. With the exception of that one in the movie "Fruit Fly to Harvard", they are all very dumb and easy to kill.
Lately, I've had a fruit fly problem around my indoor herb garden that I keep in the kitchen. I have 80 zillion tiny flies hovering around my plants! Fruit flies are annoying, but they can also carry disease and bacteria, so I definitely don't want them hanging around my kitchen. Here's how I got rid of them:
Anyway, I moved my sundew plant (which is growing in a vintage coffee mug, don't judge me!) to the herb windowsill in hopes that it's sticky nectar would attract and trap the fruit flies.
I poured a glass of wine for myself (a 2002 Waverly Estate Gallant Grey vintage port, in case you were wondering) and sat at the windowsill to watch the massacre. It was brutal! Within seconds, the dumb dumb fruit flies were all like, "Oh cool! Free sticky dinner! Hey this is yummy! Oh wait... I can't move... Hey Merv, can you come get me out of this sticky stuff? Oh no, Merv, you're stuck too! Hey Chuck, can you come help us out of this sticky stuff? Oh no, Chuck!" It was awesome.
Although this was working great, it didn't seem like a long-term solution. The sundew plant is pretty tiny and it has only so much sticky nectar to trap flies. I decided to use a backup trap, the old "Overlook Hotel" method- you can check in, but you will never really check out...
This is an easy way to get rid of fruit flies anywhere. First, put something yummy in a jar or bowl, such as beer, wine, a banana slice, or even just sugar water. Next, cover the jar with saran wrap. Poke one small hole in the middle of the saran wrap. The flies will enter through the hole attracted by the food, but when they try to get out, they will follow the sides of the jar up to the top and won't find an exit. Stupid flies, they don't remember that they came in from the middle!
So now I'm double-timing the little suckers, and hopefully the population will disappear in a few days. Man, fruit flies are so dumb!