Every spring and summer, I try to be careful about avoiding a fruit fly problem, but somehow they still sneak into our compost bin under our sink (even though I keep the bin and the cabinet closed). Once we have fruit flies, I have a hard time getting rid of them. It is difficult to eliminate every source of food for them – such as fruit bowl or my indoor plants.
This is a really easy – and natural – way to deal with fruit flies.
Put a piece of banana in a jar. I found that banana worked better than other things. And even better, add some apple cider or other sweet juice.
Seal the top with plastic. This can be saran wrap kept in place with a rubber band, or something like Press & Seal (like in the photo below).
Poke small holes in the plastic wrap. Just small enough for the fruit flies to enter, but then they are trapped and cannot climb out.
Try to put away any other sources of temptation for the fruit flies. This can be a challenge!
Be sure to clean out the jar on a regular basis. You can also use recycled jars (such as plastic containers) that can be thrown out if you aren’t good about cleaning out the jar. For this one, I cut the bottom off a plastic water bottle, and wrapped the whole thing with a piece of Saran wrap. Within 2-3 hours, I had at least 50 fruit flies.
Bananas worked best for me. However, there are lots of other great natural ways to try to combat a fruit fly problem that may work better for you. Apple cider vinegar didn’t work well for me, but it may work great for you. I have also heard that you can combine apple cider vinegar with Dawn soap.