Indoors, a fruit fly infestation can be a truly annoying experience. Here’s how to get rid of fruit flies, including how to make your own fruit fly trap!
Where Do Fruit Flies Come From?
Reach for a peach, and what happens? A squadron of fruit flies takes to the air above the fruit bowl! But where the heck did they come from?
They probably didn’t come from your grocery store produce. They tend to wander into your home from the outside when they catch the scent of fruit that’s ripening, especially if it is starting to get a bit overripe. (In fact, fruit flies actually prefer wine and beer to fruit because they like food that has fermented.)
What Are Fruit Flies?
The tiny, yellowish, red-eyed insects are part of a large family of small flies that has about 3,000 species. Unlike houseflies, which may spread disease, fruit flies are harmless. They can live and breed in drains and garbage cans, and on damp mops and rags. Spilled juice under the refrigerator or a rotten potato at the bottom of a bin can be a happy home for the fruit fly’s larvae.
Fruit flies lay their eggs near the surface of your ripe fruit—and they can lay up to 500 eggs at a time! About 30 hours later, tiny larvae emerge and feed on the fruit, eventually turning into pupae. A week later, they are ready to take to the air.
Luckily for us, the entire lifespan of a fruit fly is only about 2 weeks. However, researchers have discovered that drinking a fermented beverage will enable a fruit fly to live a day or two longer—and a day or two is quite a bit when your life is only two weeks in total!
Photo by John Tann/Wikimedia Commons
How to Get Rid of Fruit Flies
Eliminate Fruit Fly Breeding Grounds
The key to preventing fruit flies is to not attract them in the first place, so keeping your kitchen and dining area clean and free of potential fruit fly breeding grounds will go a long way toward stopping an infestation before it begins. Here are some tips:
Refrigerate or throw away ripened or damaged fruit instead of leaving it out where the fruit flies can access it. Check it regularly for blemishes or rot too.
Make sure you take out the garbage regularly, and consider putting a secure-fitting lid on your trash can.
Completely clean up any spilled fruit juice, beer, or wine, and don’t leave half-empty drinks out.
You can buy fruit fly traps or make your own, and either way, they should be effective. One of the most common traps is the cider vinegar trap:
Fill several glasses or jars with apple cider vinegar (or old beer) to about 1/2 full. The flies will be attracted to the smell of the fermented liquids.
Add a drop of liquid dish soap to each glass and mix gently with a spoon. This breaks the surface tension of the liquid, making it so the flies can’t just float on the surface.
Put plastic wrap on top of each glass so that it is tight, and hold the plastic wrap in place with a rubber band.
Punch about ten holes in the plastic wrap with a toothpick, and put the glasses in an area frequented by fruit flies. Make sure the holes are wide enough for the flies to crawl through. They’ll be enticed by the smell, crawl in, and drown in the mixture.
Tip: No plastic wrap (or aluminum foil) on hand? Take several pieces of paper and roll them into funnels (taping the sides of each funnel so they don’t unravel), then place a funnel into each glass. Flies will be able to get in, but not out.
Catherine Boeckmann is the Executive Digital Editor of Almanac.com, the digital home of The Old Farmer’s Almanac. She leads digital editorial strategy and publishing across a wide range of Almanac sub...
Leave an open bottle of wine near where the fruit was. I suggest waiving off all the fruit flys then moving the fruit making it more likely they find the wine. They'll go down into the bottle and then they're trapped.
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<span>Migsygirl</span>Wed, 09/09/2015 - 15:44
I recycled a sour cream container and lid, marked the lid with "fruit fly catcher" and the recipe, store it under the sink when the house is fruit fly free (basically, winter), just so it doesn't get thrown out. I punched a row of small holes in the lid, put a couple tablespoons of balsamic vinegar in the container along with a dab of liquid dish detergent and a little water. This has worked like a charm for several years. When the flies are thick, I will even tuck the container into the middle of the fruit tray, and from the number of gnats I collect in the container, I think they are drawn away from the fruit by the strong balsamic.
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<span>Rac</span>Wed, 09/09/2015 - 10:08
We put a small amount of cider vinegar in a little dish, add a few drops of liquid dish soap. They are attracted to the vinegar, but cannot fly off with dish soap on their wings, and drown in the solution. Works every time.
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<span>Neald8N</span>Wed, 09/09/2015 - 10:05
I fill a shallow container with a few drops of dish soap mixed into 1:1 warm water and cider vinegar. They can't resist the smell and the soap prevent them from using surface tension to land on the water. They just sink.
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<span>Sparkle</span>Tue, 09/08/2015 - 22:22
I put apple cider vinegar in a small container, wrap with plastic wrap, slit a hole with a knife, leave on kitchen counter. Fruit flies go in, can't get out and drown. Works every time!
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