DIY Fruit Fly Trap in 4 Easy Steps

DIY Fruit Fly Trap in 4 Easy Steps

Are you having trouble with fruit flies in your kitchen, garbage, compost bin, or elsewhere in your home? I know it’s a problem for me from time to time, especially in my grow room. Well luckily, it’s SUPER easy to build an effective DIY fruit fly trap with just a couple of household supplies. Learn more about how to build your own fruit fly trap below!

But first…

What are Fruit Flies Attracted to?

Fruit flies love to eat fermenting fruit. As fruit and other organic materials begin to get over-ripe and break down, they start to ferment and produce alcohols and vinegar. Fruit flies are attracted to the sweet aroma of these byproducts, and these moist environments are also ideal places for them to lay their eggs.

Now, onto the important stuff. How to build your own DIY fruit fly trap!

Supplies Needed for a DIY Fruit Fly Trap

You only need a couple of supplies to build your own DIY fruit fly trap and I bet you have some, if not all, of these items lying around your house!

Supplies include:

Empty water bottle (size doesn’t really matter, but I used a 1.5 liter bottle)

Plastic wrap

Rubber band

Apple cider vinegar

Dish soap

Scissors or box cutter

Only a few supplies required to build a DIY fruit fly trap

How to Build a DIY Fruit Fly Trap in 4 Steps

Step 1:

Carefully cut your water bottle in half with your scissors or box cutter. You will only need about 4-5 inches of the bottom half of the bottle.

If you want to use a cup or a mason jar instead, you can skip this step.

Carefully cut around the circumference of the bottle
You will need about 4-5 inches of the bottle for your trap

Step 2:

Time to mix up your trap bait. For this, pour about half an inch of apple cider vinegar into your remaining bottle, cup, or jar.

You should use apple cider vinegar for this because it has a sweet aroma that will attract fruit flies. There are other types of traps where white vinegar can be used, but for this method, stick to apple cider vinegar.

Pour about half an inch of apple cider vinegar into your bottle

Step 3:

Now, add a couple teaspoons of dish soap, it doesn’t have to be precise. The purpose of the dish soap is to break the surface tension of the vinegar so the flies can’t land on top of it. Without it, the fruit flies would be able to land right on top of the vinegar and fly away again.

Add a teaspoon or two of dish soap to the vinegar to break the surface tension

Step 4:

Finally, take a small piece of plastic wrap or press n’ seal, and pull it tight over the open mouth of the trap.

Pull a piece of plastic wrap over the top of the trap

Secure the plastic wrap in place with a rubber band, ensuring the surface remains taught.

Secure the plastic wrap with a rubber band

Lastly, poke a few holes into the plastic wrap, just large enough for the fruit flies to get in. This will allow them to get in, but makes it more difficult for them to escape.

Poke a few small holes in your plastic wrap with a tooth pick, pen, or knife.
Spread 6 or 7 holes out evenly across the plastic wrap

Time to Set Your Trap

Congratulations, your DIY fruit fly trap is complete! Now, just set it near the area of your fruit fly problem and give it a few days to work.

As I previously mentioned, my grow room had a few annoying fruit flies hanging around so I set my trap right on the shelf between my tomato seedlings.

Set your trap wherever the fruit flies are causing trouble

1 Week Update

I set my trap out a week ago and I’m already seeing great results! There are about half a dozen flies floating around in my trap and there’s definitely a decrease in the number of flies hanging around my plants.

A fruit fly floating in my trap
My DIY fruit fly trap is working well. Those dark spots are all flies!!

Conclusion

If fruit flies are giving you a problem, they are really easy to control with this DIY fruit fly trap. As you can see, it is quick and simple to build, and is basically free. The other bonus to this method is you can recycle some plastic bottles instead of sending them to the landfill.

I’d love to hear your thoughts and ideas about how to build a DIY fruit fly trap, so please reach out and comment below! Also, if you enjoyed this article and would like more weekly content, make sure to subscribe to our blog!

Happy Fruit Fly Hunting!

Cody

Thistle Downs Farm

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