This is great information from Gnowfglins on how to get rid of fruit flies.
Here is the video on their site. I have included their instructions below.
It’s that time of year! Fruit flies go crazy for fermenting foods, and fermenting concoctions are a hallmark of a traditional kitchen. What to do about them?
Try my homemade fruit fly trap. It really works — and better yet, it is simple. Watch me put one together in the short video above, or see below for the quick print instructions.
Here’s how this works. You’ll combine apple cider vinegar with a little bit of soap. The fruit flies are attracted to the vinegar (of course) and want to eat it. Normally, they would be able to float on the surface and gobble to their heart’s content. But by adding a bit of soap to the vinegar, you’re breaking the surface tension of the vinegar (which otherwise allows them to float), causing them to sink in and drown. Yeah!
I keep a little cup of this in all troublesome areas of my kitchen: near the sourdough starter, near other ferments, near fresh fruit, and near the compost bowl. I highly suggest you get some of this going in your kitchen pronto.
Homemade Fruit Fly Trap
- a cup or bowl
- apple cider vinegar (or other vinegar)
- dish soap
Put some apple cider vinegar in the cup or bowl, about 1/4 to 1/2 cup. Add a few drops of dish soap and stir lightly. Set beside any troublesome areas in your kitchen. As the mixture evaporates, replenish with fresh vinegar and soap. Occasionally wash out the cup because it will turn into a graveyard for the pesky flies.