Best Ways to Get Rid of Fruit Flies

You may remember fruit flies (scientifically speaking Drosophila, usually melanogaster) from your days in school, specifically biology class. The good times when we mixed up that delicious concoction of gelatinous goo for them to lay their eggs in so their larvae would have something to eat when they hatched. It was a hell of a good time. We got to watch fruit flies mate, lay eggs, hatch, eat their little hearts out, metamorphosise, and start all over again. Even more fun, for me at least, was gassing them, counting them, and looking for and recording mutations through the generations. Sadly, though, that was my first and last enjoyable experience with the fruit fly. After I moved out of my parents’ place, I had the freedom to be a slob, not do my dishes for weeks, and leave anything I wanted laying around for as long as I wanted.

Not a great idea, especially for the fruit flies. I learned the hard way that fruit flies are pretty fond of not only lab-created gelatinous goo, but also large food-like messes, especially, as their name suggests, old fruits and vegetables. It doesn’t stop there, though. Fruit flies are attracted to, and will lay their eggs in, almost any form of moist decaying organic matter. To make matters worse, they can lay in excess of 500 eggs at a time. That’s a lot of nasty floaty bugs. While they are a year-round problem, they tend to be worst in late summer and early fall. But since you’re probably getting impatient with my biology lesson, allow me share a few things I was forced to learn, and let’s start killing fruit flies.

Fruit Fly Identification

closeup of a fruit fly for ID purposes

  • About 1/8 inch long
  • Red eyes
  • Tan, brown, yellow or greenish in color
  • Often mistaken for drain flies

Best Fruit Fly Control Methods

Find and remove all food-based breeding grounds. Start in the kitchen. Dispose of any overripe fruits or vegetables. Cover fruit bowls or, better yet, put them in the fridge. Do the dishes. Fruit flies will lay eggs on leftover plates and in dirty glasses. Search through every cupboard and check for wet or infested grains, crackers, potatoes, pastas, beans, etc. If it looks questionable, get rid of it. Take the garbage out immediately. Search the entire house for other food messes. Pay special attention to kids’ rooms. Look under beds and in closets for dirty dishes. Wash all sponges, dish rags, and towels. Sweep and mop, dump mop water, clean bucket, and wash mop head.

dirty nasty filthy sinkFind and remove all other breeding grounds. Once you have disposed of all their favorites, fruit flies will be forced to find alternatives. You will need to find and take care of these as well. If you have one, start by cleaning the dishwasher. Clean inside and out and get all excess food and liquid. You will want to do dishes by hand until the fruit fly infestation is gone. Clean under the stove and under the oven. Clean the seals on the fridge and freezer doors. Plants and flowers attract fruit flies with their nectar and wet soil, take ’em outside. Check to make sure there aren’t leaks under the sinks where wood may be rotten. Clean drains and garbage disposals. Clean up any lint around the washing machine because it will trap that moisture.

Proper storage measures. Once you have done everything you can think to do to remove breeding grounds for fruit flies, the last thing you want to do is allow them to destroy even more of your good food. Do yourself a favor, and go to the store and get some good canisters, cans, or plastic storage containers with tight-fitting lids for food products like grains, pastas, cereals, beans, peas, flour, crackers, and anything else that might attract fruit flies if it gets damp. YOu may want to give Rubbermaid modular canisters a shot, they stack nice and easy. If you run across something that you’re not sure about, put it in a container. Better safe than sorry. Be sure to also get a garbage can with a tight-fitting lid.

Exclusion measures. You’ll want to now stop them from getting in again, given the hassle of cleaning them out in the first place. First thing’s first: if you have trash cans sitting outside, start keeping them as far from the house as possible. Throw yard waste on top of your food compost pile (to prevent more growth), or just stop composting. Patch any holes in window screens. Keep doors closed. Look for and fill any cracks around doors and windows.

bald person saying "two weeks"Alright, you’ve done it! Now set a timer. Just because you’re no longer seeing any evidence of fruit flies does not mean that you’ve won the battle. Under normal temperature conditions, it could take anywhere from 7 to 14 days for fruit flies to move from egg to adult. So don’t start celebrating until at least two weeks have passed. In the meantime, keep up on sanitation. You don’t want any new adults that might emerge to have a playground for their silly sexcapades. After the two weeks have passed fruit-fly free, have yourself a nice celebratory beer.

Commercial Products to Get Rid of Fruit Flies

rory_fruitflies2You can check on Amazon and you’ll find that fruit flies can be killed with a bunch of different stuff. Probably the most common of these is fruit fly traps. Most of these are little plastic or cardboard units filled with sticky stuff and an attractant like vinegar or fruit scent. The can be placed almost anywhere. A couple good examples of these are Natural Catch Plus Fruit Fly Traps, Vector 960 Fruit Fly Trap, and Banana Scent Fruit Fly Trap. There are even some electric fruit fly traps that plug into an ordinary outlet like the FlyWeb Fly Light and the Insectalite 30 Watt Professional. These use a little lamp to lure fruit flies in where they get stuck to a glue board. And, of course, you can’t forget about good, old-fashioned fly strips. If you’re looking for something to hit ’em with in flight, there are also numerous pyrethrin sprays available like Clear Zone I Pyrethrin Aerosol, CB Intruder HPX, and Microcare Aerosol. If you’re looking for something to dump down the drain to kill fruit flies, I would suggest InVade Bio Drain Gel (found here at Amazon) or DF 5000 Drain Gel.

Best Homemade Fruit Fly Traps

pop bottle fruit fly trapSoda bottle fruit fly trap. Cut the top off a clean two liter soda bottle just above the label and put a couple inches of tasty liquid, like juice, wine, red wine vinegar, balsamic vinegar, or beer, in the bottom. Invert the top of the bottle with the lid off and stuff it down. Seal the edge with some duck tape and let the fun begin. The fruit flies go in but are too dumb to get back out.

diagram of a homemade funnel fruit fly trapFunnel fruit fly trap. Make a cone from a sheet of construction paper and cut the top off to create a funnel. Pour a little cider vinegar in the bottom of a clean jar and, without allowing the bottom to touch the liquid, stick the funnel in the jar so it fits tight. You may need to use some tape. The key is to avoid any gaps. The fruit flies are attracted to the cider vinegar, fly into the cone, can’t get out, and drown.

homemade fruit fly trap with apple cider vinegarBowl fruit fly trap. Put a bowl out that’s full of old fruit, juice, vinegar, or a combo of them all. Cover the bowl tightly with plastic wrap and put a rubber band around it. Stab tiny holes in the cover, that way they get in. Don’t make the holes too big or the fruit flies will get back out.