7 Fantastic Tips for Getting Rid of Fruit Flies in Compost (2024)
Composting is an excellent way to turn food scraps and yard waste into usable material for your lawn and garden. However, the compost heap is not a pleasant smelling area of the yard, often drawing flies, gnats, fruit flies, and other annoying insects. Find out how to get rid of fruit flies in the compost bin and keep your composting material as pest-free as possible.
If you’re an avid fruit eater, your compost pile probably has plenty of banana peels, apple cores, orange peels, and other rotten fruit scraps. While these green materials are necessary for the composting process, they are magnets for adult fruit flies and fungus gnats, often leading to a fruit fly infestation.
Nothing ruins an outdoor experience more than an overpopulation of compost flies. You spend more time swatting at the pests than working in the garden or doing lawn work and may even give up and head back indoors. Fortunately, there are steps to eliminate fruit flies and keep them out of the compost pile.
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Table Of Contents
Ways to Keep Fruit Flies Out of Compost
Why Are There Fruit Flies in the Compost Pile?
Are Flies Harmful to Compost?
Ways to Keep Flies Out of Compost
Changing the Compost Material to Get Rid of Fruit Flies
How to Get Rid of Fruit Flies in the Compost Bin
Using a Trap to Get Rid of Compost Fruit Flies
Ways to Prevent Fruit Flies in Your Compost Bin
Ways to Keep Fruit Flies Out of Compost
Overripe fruit is a favorite food source for fruit flies, so it’s no wonder they spend their time feasting and breeding in a compost bucket or pile. Discover how to eliminate these pests and prevent a fruit fly problem.
Why Are There Fruit Flies in the Compost Pile?
The best way to keep flies out of compost is to understand why they are there. Explore what attracts fruit flies to composting material and what causes them to become an infestation.
Compost flies are common since composting materials consist of ripe fruit scraps. Adult flies enjoy the alcohol produced from fermenting food waste. They lay their eggs in moist, organic material near this food source to ensure larvae have plenty to eat.
Are Flies Harmful to Compost?
All insects are a necessary part of nature, but are flies good for compost? No major issues arise from fruit flies hanging out in the compost pile. Nevertheless, they quickly become a nuisance. On the other hand, worms are good for composting, whether you have a vermicomposter or a standard compost pile or tumbler.
Fruit Flies and Compost
Fruit flies and other insects are beneficial to compost, helping to break down the organic matter. You may not want a fruit fly infestation since their presence is unbearable as you turn and water the material. However, while there are advantages to flies in the compost, each female fly lays up to 500 fruit fly eggs when given the opportunity.
Ways to Keep Flies Out of Compost
Though fruit flies do not affect the composting process, you don’t want them flying around, especially when they start breeding. Here are a few simple ways to keep flies out of compost.
One of the more obvious and best ways to keep fruit flies out of the compost is to cover it with a lid or a tarp. It’s also useful to wrap kitchen scraps in paper bags or newspapers before tossing them into the compost bin. The paper contains the food smells as they break down, making it less noticeable to pests.
Consider applying fruit fly repellent oils around the compost bin. Pour some lavender, eucalyptus, lemongrass, or peppermint essential oil onto a cotton ball and wipe it on the bin’s edges to confuse the insects and deter them.
Changing the Compost Material to Get Rid of Fruit Flies
Fruit flies become a problem if left unchecked, whether you have flies in compost tumbler, bin, or heap. Luckily, they are easy to control by adding different composting materials.
Fruit flies prefer an environment with high humidity, and adding more brown material, like cardboard, to the top of the compost heap lowers moisture levels. Additionally, flies enjoy the high nitrate content of compost and adding crushed eggshells remedies this problem.
How to Get Rid of Fruit Flies in the Compost Bin
One of the best ways to prevent fruit flies in your compost bin is to hot compost rather than cold compost or worm compost. Hot composting is a method that uses heat to break down materials, creating fast compost with fewer pests.
Hot Composting
A hot compost pile contains brown and green materials broken into small pieces. You turn and water the compost regularly, which heats the compost between 130 and 140°F. The heat allows microbes to reproduce and quickly break down the organic matter. The high temperature prevents fly larvae in compost while killing harmful bacteria and weed seeds.
Using a Trap to Get Rid of Compost Fruit Flies
The most straightforward way to get flies out of your compost bin is to make a fruit fly trap. This homemade trap is simple to put together, and lures and traps flies for convenient disposal.It kills fruit flies that become a problem near your composter.
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Fruit Fly Trap
Clear plastic container
Banana peel
Toothpicks
Apple cider vinegar
Juice
Dish soap
Plastic wrap
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Take a clear plastic container, like a plastic soda bottle, and pierce three or four holes in it with a toothpick. Place a banana peel or apple cider vinegar inside the container, close the lid, and set it on top of the compost pile. The flies enter the holes in search of food and cannot escape.
If you have an indoor compost machine, pour fruit juice or cider vinegar into a container with a squirt of dish detergent, and cover it with a sheet of plastic wrap. Poke holes in the plastic and set the container near a fruit bowl to lure and trap flies.
Ways to Prevent Fruit Flies in Your Compost Bin
Composting takes time and effort; the last thing you want to deal with while turning and watering the compost is flies. There are several ways to prevent fruit flies in your compost bin and stop an infestation before it starts.
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Fruit Fly Pest Control
Burying greens
Compost aeration
Compost materials
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Since the food scraps, vegetables, and fruits are what attract vinegar flies, bury these nitrogen-rich materials beneath a layer of brown materials and soil.
Aeration is also a great way to deter these pests. Turn the pile regularly to increase oxygen levels and encourage decay. Keep the pile level and avoid letting the compost pile up in the center, which causes a warm center with cool edges.
For preventing fruit flies completely, avoid putting fermenting foods into the compost pile. While this slows the composting process, it eliminates a fruit fly problem. Instead, add grass clippings, perennial and annual plant trimmings, eggshells, seaweed, and coffee grounds.
Composting is one of the best forms of recycling. You end up with a rich soil conditioner for your vegetable garden, lawn, and plants. However, compost is a free meal for fruit flies and other pests. Fortunately, there are simple ways to prevent fruit flies from taking over the compost pile and becoming a nuisance.
Now that you discovered how to get rid of fruit flies in the compost bin, why not share our compost fruit fly eliminating tips with your family and friends on Facebook and Pinterest?
Space permitting, store food scraps temporarily in the freezer in between visits to the drop sites. The cold temperature will kill any fruit fly eggs. There are also kitchen compost bins designed specifically to fit in your freezer, such as on the door, instead of being left on the kitchen counter.
Are Fruit Flies Harmful to The Compost Pile? Fruit flies are generally considered harmless even to your compost pile. The tiny little critters do not have teeth and do not bite. They are only a nuisance although cannot harm your composting pile.
If the compost is too wet, the flies are more likely to be attracted to the rotting material. If this is the case, you should add more browns such as shredded leaves, cardboard or newspaper. I hope that this information will help you with your fruit fly problem.
Yes, vinegar can go in the compost. Vinegar is made from a variety of diluted alcohol products, the most common being wine, beer, and rice. It is an alcoholic liquid that has been allowed to sour and is primarily used to flavor and preserve foods and as an ingredient in salad dressings and marinades.
2. Use Deterring Scents. Fruit flies hate several rather nice smelling natural scents, including peppermint, lavender, eucalyptus, lemongrass, and clove.
Most pests and houseflies appear in compost piles because they are filled with their natural food. Once they eat, they lay eggs in the same area, trying to guarantee a food supply for their young. These eggs hatch into larva, or maggots, in a few days, compounding the “ick factor” connected to flies.
In fact, they play a role in breaking down plant and animal tissues. Often, these maggots are the larval life stage of compost-dwelling soldier flies, according to Linda Brewer, Oregon State University Extension Service soil scientist.
If you're dealing with an infestation on your indoor plants, you can make a strong solution of 3 percent hydrogen peroxide and four parts water. You can then use this mixture to saturate the soil the next time that you water your plants. Let the soil dry for a few days and the infestation should be taken care of.
These little flies are vinegar flies or drosophila, and the reason why they're found in the compost bin or worm farm is because they feed on and breed in rotting fruit and vegetable matter, and their larvae (maggots) feed on micro-organisms. They're short-lived, with a lifespan of around 50 days.
Fill a small bowl with apple cider vinegar and 2 drops liquid dish soap. Mix well and leave on the counter (away from pets). Fruit flies will be drawn to the bowl and meet their demise.
Will fruit flies go away on their own? A fruit fly infestation won't just go away on its own—it'll likely only get worse. Even if the adult fruit flies die, you'll continue to get new fruit flies every day unless you cut off the source.
How do I get rid of fruit flies quickly? A fast way of getting rid of fruit flies is by pouring boiling white vinegar or boiling water down your drains. Fruit flies like to live in moist and hidden locations, such as drains and garbage disposals.
In laboratory scale experiments using a microcosm thermally contained system, hydrogen peroxide exerted a triggering effect on the composting process. Upon treatment with hydrogen peroxide the temperature in the composting mass increased at a significantly faster rate than in the control.
DON'T add meat scraps, bones, grease, whole eggs, or dairy products to the compost pile because they decompose slowly, cause odors, and can attract rodents. DON'T add pet feces or spent cat liter to the compost pile. DON'T add diseased plant material or weeds that have gone to seed.
Do flies hate cinnamon? You bet. As one of the best fly-repelling scents, cinnamon is a natural way to deter flies from hanging out in your home. The smell is overpowering, and some of its components can be toxic to flies.
Several natural enemies can contribute to the suppression of fruit flies. Major natural enemies are parasitic wasps (parasites the maggots of fruit flies) and predators such as rove beetles, weaver ants, spiders and birds and bats.
Fact: Fruit flies are attracted to and feed on decaying fruits and vegetables, drinks (including beer and wine), spills, coffee grounds, drains, trash cans, dirty mops, towels, damp clothing, moist pet food and indoor houseplants.
As a rule of thumb, actively decomposing materials should be turned every three to four days. Materials with slowed microbial activity can be turned less often. In tumblers, turning two times a week resulted in higher temperature and faster decomposition than turning once a week or once every other week (Figure 1).
Mix four parts water with one part hydrogen peroxide and soak your soil with the solution. Neem oil can also be diluted with water and applied to the soil to kill larvae. You can also use neem oil as a spray to kill adult flies on contact.
Once you see one larvae, expect more than you can squish by hand to appear in a hurry — a single fly can lay as many as 500 eggs at once. The easiest way to kill them is boiling water, but we obviously don't want you dumping boiling water into your compost bucket.
So how long does store-bought compost last after opening? Bagged compost can be preserved for up to 6 months. After a year, the volume and microbial activity will reduce considerably. Generally, compost will last for about a year if it's stored in a cool location and moisture levels are monitored.
What are the tiny white worms in my compost? These worms are better known as “pot worms” and are smaller relatives of the earthworm family. The scientific name for pot worms is “enchytraeids.” These segmented worms are pretty small – about 1/4inch to 1inch long (6-25mm).
Fruit flies especially think vinegar is good—particularly apple cider vinegar, says Hedges. But if you put a cup of apple cider vinegar out on your counter—a common trap tactic—you won't kill the pests. You will only make the problem worse, since fruit flies can actually breed in the cup.
Fill a bowl with vinegar and add a drop of dish soap, mixing well. The stale sweetness of the apple cider vinegar tempts flies, and the dish soap works to decrease the surface tension of the liquid, causing the flies to become immersed immediately upon investigating the solution and unable to escape.
Pour Boiling Water Down the Drain- Fruit flies can usually survive typical water flow down the drain, but boiling some hot water and pouring it down can kill flies and their eggs. Peptanks points out that this may be done a few times a week for a couple of weeks to make sure you kill any future generations of flies.
Mix a half cup of salt, half cup of baking soda, and one cup of vinegar, and pour the mixture down the drain. You can follow that with boiling water a few hours later. “This may help to dissolve the build-up in the drain,” Troyano says. “I would recommend following this with mechanical cleaning using a drain brush.”
Pour apple cider vinegar (ACV) into a small bowl, then mix in a few drops of dish soap. Apple cider vinegar works better than white vinegar for fruit flies because it smells like fermenting fruit. Red wine vinegar will also work, but it tends to be more expensive than ACV.
It's easy to make a fruit fly trap: Fill a clear bowl/jar with 2 inches of white vinegar, cover with plastic wrap, and poke a few holes in the wrap with a toothpick. Place it in the kitchen sink or near where you've noticed the fruit flies.
Flies can be easily repelled with white vinegar, so much so that even the smell of boiling vinegar can be an easy-to-make DIY fly repellent on its own. Pour some cider vinegar into a pot or jar to start making your fly repellent. Add one drop of dishwashing liquid.
Fortunately, fruit flies have an excellent sense of smell and are strongly attracted by bananas. A simple, nontoxic, inexpensive, humane way to trap them is to place a banana peel inside a clear plastic container and make three or four holes in the cover with a standard round toothpick.
Fill a microwave-safe bowl with apple cider vinegar and a few drops of dish soap. Microwave the bowl so the mixture becomes even more aromatic. Leave the bowl out uncovered as fruit fly bait. The soap will reduce the surface tension, causing any fruit fly that lands on the surface to drown.
Not only does hydrogen peroxide work to repel fruit flies, but it can eliminate them and keep them from coming back if used correctly and consistently.
To get these bugs out of your compost, raise the heap's temperature to above 120°F. (If you aren't sure what your pile's temperature is, measure it with a compost thermometer or a regular old meat thermometer wrapped in plastic.) Turn the pile over and rebuild it, watering it well as you go.
Do you have a fruit fly problem but hate using the sticky traps. Put a few drops any dishwashing liquid in a small dish of water and place it by the fruit on your counter. Fruit flies are attracted to it and will fly into the water and die.
Within 24 to 30 hours, fruit fly eggs hatch into larvae known as maggots. These maggots feed on the fruits within which they were laid. Within one week, maggots burrow through the decaying matter and molt. After five to six days, larvae move to a dry surface and transform into pupae.
Fill a fine-misting spray bottle with rubbing alcohol, and spray the fruit flies. The alcohol will kill them, and dead fruit flies can be cleaned up easily with a wet rag.
Lavender, peppermint, eucalyptus, clove and basil herbs and essential oils can be effective in detering and preventing fruit flies: Place herbal tea bags around your kitchen. Add a few drops of essential oils to cotton balls and put them where you've seen fruit flies.
A compost starter, also known as “activator” or “accelerator,” is composed of bacteria and fungi targeted at starting the decomposition process. You will find a lot of biological activities occurring during the process of decomposition.
It will lose much of its value if materials are left to decompose too long. The more time compost is left to sit around, the more “colloidal” it becomes. In other words, it becomes more and more compact as the composting microbes continue to feed on the waste materials.
Introduction: My name is Edwin Metz, I am a fair, energetic, helpful, brave, outstanding, nice, helpful person who loves writing and wants to share my knowledge and understanding with you.
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