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A Simple Mosquito Trap Using A 2-Liter Bottle, DME, and Bakers Yeast

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It is summertime and that means spending time outside enjoying your favorite craft beer is a must.  However, there is nothing more frustrating than cracking open a beer and immediately realizing you are being eaten alive by mosquitoes or that damn fly will not stay out of your beer!  As a homebrewer I spend a lot of time brewing and drinking beer outside.  Did you know that studies have shown drinking beer increases your mosquito sexiness by 15%?  Did you know a mosquito can smell that CO2 being released from over 50 feet away?  The solution:  FERMENTATION.  This is how I keep those nasty insects away from my happy time.  I have noticed this works for many insects including mosquitoes and flies.  Here is a simple mosquito trap you can build.

Supplies Needed:

  • Scissors or A Utility Knife
  • Empty 2-liter bottle
  • 1 Cup DME (Dry Malt Extract) or Brown Sugar
  • 2 Cups of water
  • Baking Yeast
  • Black cloth
  • Insects to kills
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1. Find an empty 2-liter bottle

 

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2. Cut the bottle into two parts. You will want the bottom portion to be slightly larger. 60/40 should do it.

 

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3. Put the two pieces together like this. You will want room at the bottom for some liquid.  The hole inside is where the insects make their way in.

 

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4. Add 1 cup of DME (brown sugar will work too) to 2 cups of really hot water
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5. Add some baking yeast to your concoction. Baking yeast works better in high heat and creates more carbon dioxide. Insects are attracted to the CO2 gases released when the yeast attacks the sugars. If you are in a pinch and the temperature isn’t too hot, you can use brewing yeast.

 

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6. Your mixture should look something like this and should contain the DME, yeast, and hot water.
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7. Add your Mosquito cocktail to the 2-liter trap like this.
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8. Wrap the trap in something black. Mosquitoes and most other insects are attracted to black. I used weed cloth which seems to work well.  You are done!  Now sit back and wait!
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If your trap looks like this one…move!