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mozzie co2 trap

✅ Safe DIY CO₂ Mosquito Trap (Yeast + Sugar Bottle Trap)

This is the classic, safe version that releases small amounts of CO₂ through fermentation.

What You Need

  • 1 empty 1–2 L plastic bottle

  • 1 cup (200 g) sugar

  • 1 cup hot water

  • ½ cup cool water

  • ½ teaspoon dry yeast

  • Black tape or paper (to darken the bottle)

  • A knife/scissors

🛠️ How to Make It

1. Cut the bottle

Cut the bottle about ⅓ from the top.
You’ll use the bottom part as the container, and the top as a funnel.

2. Make the sugar solution

  • Pour hot water into the bottom half.

  • Add sugar and stir until dissolved.

  • Pour in the cool water to bring the mix to lukewarm (NOT hot).

    • If it’s too hot, it kills the yeast.

3. Add yeast

Sprinkle yeast on top.
Do not stir — it will activate slowly and start producing CO₂.

4. Assemble the trap

  • Place the top half (funnel) upside down into the bottom half.

  • Tape the edges to seal it.

5. Darken the bottle

Mosquitoes prefer dark areas; wrap the bottle with:

  • black paper, or

  • black tape
    Leave the top open.

6. Place the trap

Put the trap in:

  • corners of rooms

  • under tables

  • near dark/humid areas

Avoid windy areas or directly under fans.

🧪 Why It Works

  • Sugar + yeast = fermentation

  • Fermentation releases CO₂, similar to human breath

  • Mosquitoes follow the CO₂ stream into the funnel

  • Once inside, they get trapped and die

⏱️ How Long It Lasts

  • Effectiveness lasts 3–5 days, depending on room temperature.

  • Replace the mixture weekly.

⚠️ Safety Notes (Important)

This method is safe because:

  • Fermentation produces very small amounts of CO₂ (not dangerous in a ventilated home)

  • No chemicals or flames are used

  • Non-toxic for pets and kids if placed out of reach

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