Simple Water Bottle Trap Will Take Care Of Houseflies For Good

by Rebecca Endicott
Becca is a writer and aspirational dog owner living in NYC.

I love summertime, but I sure don’t love the sudden increase of insects that appear during the warmer months.

No matter how clean you keep your house, there are some invaders that just manage to get in no matter what, like these ubiquitous little sugar ants.

And insects with a knack for getting in also seem incredibly hard to get out again. That’s why, when it comes to tackling these bugs, sometimes the best solution involves a little creative DIY.

Take, for example, one of the most common pests around: the fly. Whether you struggle with big, buzzing houseflies or little, irritating fruit flies, you may want to consider putting together a homemade trap that will handily destroy just about every fly in its path.

Best of all, this trap is easy to make, nontoxic, and can be thrown together with just a few dollars. Originally posted on the photo-sharing site Imgur, it’s a simple and affordable way to tackle those summertime pests.

Check out how it’s done below!

To start this project, you only need a few materials.

For the trap itself, you need a disposable plastic water bottle, rinsed clean.

For bait, you’ll need a banana and granulated sugar.

First, you will need to slice the bottle in half with scissors or a sharp knife. Mark where you plan to cut, about two-thirds of the way up from the bottom, then cut all the way around.

When you’re done, you should have two sections: a smaller piece with the cap and a larger piece that can rest flat on the table.

Pour about 1 Tbsp. of granulated sugar into the larger section of the bottle until the bottom is just covered.

Next, slice a ripe or slightly overripe banana into finely chopped pieces.

Add the chopped banana to the sugar in the bottle — this sweet mixture will help to lure flies, which feed on rotting and decaying organic matter.

Once you have the banana and sugar in the bottle, mash them slightly together to form a paste that will dissolve a bit better.

Add about an inch and a half of warm water to the paste, and stir the mixture slightly.

The warm water and sugar will also make the banana rot faster, which makes it more potent bait for flies.

Now that the mixture is ready in the larger piece of the bottle, return to the smaller section of the water bottle.

Remove the plastic cap and invert the smaller piece over the larger, so that the narrow neck of the bottle faces down.

Nest the smaller piece into the larger piece so that the opening is in or right above the banana mixture. Now, your trap is complete.

Let your fly trap sit out for about a week.

In that time, the bottom section of the trap should fill up with flies.

It may get a bit gross after the first couple of days, but it’s well worth it to get rid of any flies plaguing your house.

Here’s the close-up look of how the fly trap works.

Flies move down through the bottle neck into the bottom section to where the banana bait is.

From there, they struggle to find the opening again and drown inside the bottle. Gross, but it gets the job done!

If you’ve used this trick before or plan to use it now, make sure to SHARE with friends so they can save on flypaper this summer!