Mosquitoes are drawn to CO2. Yeast create CO2. So, use yeast to draw mosquitoes into a trap.
I heard about this tip somewhere and thought I’d share it with you. It cleverly uses yeast’s carbon-dioxide bi-product to trick mosquitoes into going into a bottle. Since mosquitoes are also drawn to heat, you can paint the bottle black to make it extra temping. This is a very natural and eco-friendly pest control. You can just use some old bread yeast, although some spent beer-brewing trub (pronounced TROOBE) will work awesomely too.
Items needed
- 1 2-liter soda bottle
- scissers
- 1 cup of water
- 1/4 cup of sugar (white or brown)
- 1 teaspoon of yeast
Steps
- Cut the plastic bottle in half.
- Mix sugar with hot tap water. When cool, pour in the bottom half of the bottle.
- Add the yeast when the water is cool. No need to mix. Yeast eat sugar, and then creates carbon dioxide which attracts mosquitoes.
- Place the funnel part, upside down, into the other half of the bottle. You can tape them if you want.
- (optional) Paint the bottle, or wrap it with something black, leaving the top uncovered. The black will absorb more heat during the day. Both the yeast and mosquitoes like it warm.
- Place the trap along the edges of your yard.
Maintenance (Every Few Weeks)
Add some more cooled sugar water every 2 weeks so the yeast has something to eat. If there are a lot of dead mosquitoes, and or the liquid looks especially nasty, spray it out and start over.
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