Fruit Fly Trap Diy Wine. Punch about 6 to 8 holes on the sides of the bottle. It's usually desirable to have some liquid in the bottom so they drown instead of setting up families.
Apple cider vinegar is the fruit fly trap hack you hear about most often (because it works!). To make it, cut off the top of a soda bottle and insert it into the remaining part inverted. You can fill a plastic bottle or other containers halfway with red wine, and place a paper cone down the bottle of the neck and leave it in an area where fruit flies are gathering for a homemade gnat trap.
A vinegar fly trap might be the easiest kind to make, and it's the best kind for fruit flies.
I turned my kitchen into a lab—testing five versions of the homemade fruit fly trap—and found a clear. Some good standbys are wine, old fruit, bananas/banana peels, and orange juice. This isn’t the best fruit fly trap option available, but it’s a really easy one to make if you’re a fan of vino! Red wine fruit fly trap like the apple cider vinegar, gnats and fruit flies are attracted to the sweet smell of red wine.