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1- Cut a plastic bottle in half with a knife.
2- Remove the cap from the bottle and place the smaller part, upside down, inside the larger part.
3- Take a medium-sized plastic jar and make holes in the sides of it.
4- Insert perforated rubber or plastic stoppers into the holes of the jar to attract insects.
5- In the jar, place 2 tablespoons of barley malt, honey or brown sugar to attract insects.
6- Repeat the previous step in the bottle you use as a base.
7- Add 1 teaspoon of yeast to the mixture in the jar to activate the production of carbon dioxide.
8- Pour a glass of warm water into both the jar and the bottle.
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