How to make a DIY Gnat Trap


If you’re plagued by gnats, you may be tempted to use commercial pesticides that contain nasty chemicals like DEET and permethrin, but these won’t actually solve the problem and can kill beneficial insects that help to break down organic matter. Instead, learn How to make a DIY Gnat Trap.

Instead, try out this environmentally friendly DIY gnat trap that doesn’t require vinegar or poison to be effective! All you need are some readily available supplies and 10 minutes of your time to make a trap that will attract gnats and prevent them from reproducing in your yard.
Why spend $5 or more on an over-the-counter gnat trap, when you can make one yourself in about 10 minutes with supplies that cost less than $1?

If you love your indoor plants and you’re growing a garden this summer, read on to learn how to make a DIY gnat trap from vinegar and water, and how to use it to protect your beloved indoor and outdoor plants from these pesky pests.

How to make a DIY Gnat Trap

Vinegar Gnat trap

Step 1: Collect the following supplies

You will need a bowl, some honey, and some dish soap. You will also need either apple cider vinegar or white vinegar. If you want to use vinegar, mix one part vinegar with three parts water in the bowl.

If you do not have any vinegar, do not worry! You can still get rid of those pesky gnats! All you need is a bowl filled with honey and some dish soap. Pour enough honey into the bowl so that it covers all of the surface area of the bottom of the bowl (approximately two cups).

Once this is done, mix in two tablespoons of dish soap into your mixture and stir until it’s thoroughly mixed together.

Next take your cup of water with whatever ingredient you’re using (vinegar or no vinegar) pour it over your mixture and wait for about five minutes before adding your gnats. The gnats should begin to fly over to your trap once they notice the sweet smell emitting from it!

Read: Will hydrogen peroxide kill black flies?

Step 2: Assemble your gnat trap

You will need a plastic container, some apple cider vinegar, and a piece of paper. Cut a hole in the lid of the container big enough to fit the paper. Roll the paper into a funnel and tape it to the inside of the lid. Pour the apple cider vinegar into the container.

The gnats will be attracted to the vinegar and will crawl into the funnel. Once they are in, they won’t be able to get out and will drown in the vinegar. After 24 hours, take the trap outside and dump the dead gnats into your compost pile or garbage can.

This trap can be used both indoors and outdoors. If you are going to place it outside, just tape down part of your lid so that it still closes but is open enough for flies to get in.

Make sure that your container is completely full before putting it outside, or you will have gnats flying around and might attract other pests like bees.

This trap can also be made with only water and vinegar instead of apple cider vinegar, but if you have some on hand I highly recommend using it as it smells better than plain vinegar!

DIY Gnat trap

Step 3: Place your gnat trap outside

Now that you have your trap all set up, it’s time to place it outside. Find a spot near where you’ve seen the most gnats and put your trap down. If you’re not sure where that is, just put it near some plants. The gnats will be attracted to the light and will fly into the trap.

If you’re not sure where gnats are coming from, try looking for plants that have yellowing leaves. Gnats love water and decaying matter, so if you find these things, chances are there will be gnats around.

It’s good to look for them during daylight hours because that’s when they fly around most. Also keep in mind that different plants attract different species of gnats,

so if one plant is infested and another isn’t, it might be because of the type of gnat. Some common plants that attract gnats include: magnolia trees, rose bushes and eucalyptus trees.

Read: Green Flies in the house all of a sudden

Step 4: Draw in gnats with the sugary solution

If you want to make a DIY gnat trap without using apple cider vinegar, you can use a sugary solution instead. To do this, mix together equal parts sugar and water in a bowl. Then, place the mixture in a shallow dish and set it out where you’ve seen the gnats.

The gnats will be attracted to the sugary solution and will fly into the dish, where they’ll drown.

While you can use apple cider vinegar in your homemade gnat trap, it’s not necessary. You may even find that using an ACV-free trap is more effective.

However, if you’d like to go with vinegar as well, then follow these steps: Add about 3 cups of apple cider vinegar and 1 cup of hot water into another container. Set it out where you’ve seen gnats in order to draw them in toward it. The gnats will be attracted by its pungent smell and will fly into it and drown.

Step 5: Fish out the dead insects

If you want to get rid of the bugs for good, you need to fish out the dead insects. The easiest way to do this is to wait until the trap is full, then dump it into a bucket of soapy water. The gnats will drown and you can just toss them out.

Don’t use apple cider vinegar in your trap. Although it might seem like an obvious choice, there are several drawbacks to using it. For one thing, gnats won’t be attracted to it—they need protein-rich foods and they are not fond of apple cider vinegar at all.

It also makes clean up more difficult since you’ll have sticky traps that you need to rinse off before putting them away. Ultimately, you end up with a less effective gnat trap than if you just used water and sugar on their own. That’s my two cents on How to make a DIY Gnat Trap.

Read: What causes cluster flies?

Collin Miller

Since 2002, Collin has specialized in the pest control industry. He has a Pest Control and Termite Control Commercial Applicator License. He serves on the Missouri Pest Management Association board of directors as a director at large, and he attempts to provide a personal touch in pest eradication to customers in the Ozarks. When the weather is great, Collin enjoys working in his yard, cooking, and hanging out with family and friends, as well as watching football.

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