How To: DIY Mosquito Trap

Author: Mosquito Squad

One of the best DIY hacks to defeat mosquitoes is to create a DIY mosquito trap. This would be great during a camping trip or family picnic! The concept is simple: lure the mosquitoes in with carbon dioxide (created by a yeast mixture) then trap them so they can’t escape and breed more mosquitoes. This DIY takes about 15 minutes to make. You can use the same trap all season, just replace the yeast mixture every time you use it. Kids can even join in the fun of making this all-natural trap (except for the box cutter and hot water).

Let’s get started!

Step 1: Gather your materials

a plastic bottle, brown sugar, active yeast, box cutters, and a marker for a DIY mosquito trap

You’ll need:

  • A plastic bottle (a 2-liter works well, but any kind would do)
  • Hot water
  • A marker
  • Box cutter
  • Tape (duct, scotch, or electrical)
  • Yeast (1 gram – grocery stores carry packets of active yeast in the baking aisle)
  • Brown sugar (1/4 cup)

Step 2:

hand marking an x about halfway down a plastic bottle

Make a mark half-way down the plastic bottle. For our plastic bottle, this was about 4 inches from the top of the lid.

Step 3:

a hand drawing a circle around the circumference of a plastic bottle

Draw a circle around the bottle. This will serve as your cutting guide.

Step 4:

hand cutting a plastic bottle in half with box cutters

With your box cutter, carefully cut the bottle in half with small sawing motions. The edges of the cut plastic will be sharp, so please use caution.

Step 5:

pouring hot water into half a plastic bottle

Heat up 1 to 1 1/3 cup of hot water either in the stove or microwave. When you see steam form, it’s hot enough! Carefully pour the hot water into the bottom of the plastic bottle.

Step 6:

a quarter-cup of brown sugar going into a quarter cup of water

Add ¼ cup of brown sugar to the water in the plastic bottle and stir. Let the sugar water mixture cool for about 20 minutes. This sugar is what activates the yeast to start creating carbon dioxide.

Step 7:

active yeast going into the 50/50 brown sugar and water mixture

Add the packet of active yeast to the cooled water and sugar mixture. No need to stir. You should see some bubbling – this is a good sign that the mixture smells really delicious to mosquitoes!

Step 8:

the top half of a plastic bottle inverted into the bottom half, making a funnel

Assemble the trap. Turn the top of the bottle upside down and place it (lid down) inside the bottom half of the bottle. It should look a little like a funnel. The mosquitoes will come in through this funnel then not be able to escape back out of it. Use the tape to seal the edge of the plastic bottle.

Ta-da! You’re done! Sit back, relax, and enjoy some buzz-free peace! a mosquito control expert holding the DIY mosquito trap