Simple homemade mosquito trap: How to get rid of mosquitoes without chemicals in 5 minutes

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Jan , 18. 12. 2025

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Summer is finally here and with it come not only long warm evenings in the garden, barbecues with friends and sitting with a glass of wine, but unfortunately also annoying swarms of mosquitoes. If you are among those who want to avoid commercial chemical products, or you suffer from an allergy to common repellents, we have a great solution for you. Make a simple homemade mosquito trap that will rid you of unpleasant buzzing and bites – all for a few crowns and in just 5 minutes.

Why this particular mosquito trap?

This homemade trick uses ordinary ingredients that almost everyone has at home. It’s an ecological, cheap and surprisingly effective natural protection against mosquitoes. Fermentation of yeast with sugar produces carbon dioxide, which is irresistible to mosquitoes. They think it is the exhalation of human breath – a signal that blood is nearby.

What will you need?

To make your own homemade repellent in the form of a mosquito trap, you only need a few simple things:

  • 1.5‑liter plastic bottle (PET), which you will cut off roughly in the upper third
  • 1 cup of warm water
  • 2 tablespoons of sugar
  • 1 teaspoon of dried yeast
  • a piece of newspaper or aluminum foil
  • adhesive tape and scissors

How to make the mosquito trap step by step?

1. Prepare the solution

Pour the sugar into the cup of warm water and stir well so that it dissolves. Then add the yeast and stir gently – it’s not necessary to stir thoroughly, the yeast will start working on its own.

2. Assemble the bottle

Turn the top part of the cut-off bottle upside down so that it forms a funnel, and insert it into the bottom part of the bottle. Mosquitoes will easily fly in this way, but won’t get back out.

3. Secure the joint

Thoroughly tape both pieces of the bottle all around with adhesive tape so there are no gaps that mosquitoes could escape through.

4. Cover the trap

Wrap the bottle with newspaper or aluminum foil. The darkness inside the trap attracts mosquitoes even more, and it will also be less conspicuous.

Where to place the trap?

Place the mosquito trap on a windowsill, balcony, terrace or in the corner of a room. Outdoors the effectiveness is somewhat lower due to air currents, but it is still useful there as a supplement to other protection methods.

How does it work?

Yeast consumes sugar during fermentation and produces carbon dioxide – which mosquitoes perceive as a signal of human presence. They fly to the trap, enter through the funnel and, due to the smooth walls of the bottle, can’t find their way out.

How long does the trap last and how to care for it?

The mixture inside the bottle works for approximately 10 to 14 days, after which the fermentation stops. Once the trap stops attracting mosquitoes, simply pour out the mixture, rinse the bottle and prepare a new solution.

Advantages of this homemade trap

  • Quick to make – takes at most 5 minutes
  • Low cost – you only need common kitchen ingredients
  • Eco-friendly solution – no chemicals or hazardous substances
  • Versatile use – for the garden, balcony and apartment

Conclusion

So if swarms of mosquitoes trouble you in the summer and you are looking for how to get rid of mosquitoes naturally, try this simple homemade trap. It’s unobtrusive, works reliably and can last up to two weeks. And best of all – you can make it again and again for a few crowns. You’ll see for yourself how quickly the number of mosquitoes in the trap starts to rise and you’ll finally enjoy summer evenings without bites.