An outer flie trap
For those looking for an effective external trap, the solution is simple. Take an empty plastic bottle, preferably containing milk or detergent, and rinse it thoroughly.
Then pour half a glass of sugar into the bottle, add the vinegar with a funnel and insert a whole banana skin. After shaking the bottle, place it in the desired place, either in the garden or on the balcony.
If you want, you can even hang it. The smell of the mixture inside will attract all insects inside. The powerful smell of vinegar makes it a prime target for annoying flies. However, Tea Tree, a natural insecticide, offers an effective alternative for repelling mosquitoes as well as flies.
Instead of using products purchased in stores, try to make a trap with a glass or jar. Mix the red wine vinegar, an eco-friendly dish soap and 5 drops of tea tree oil at the bottom of the container.
To make the trap accessible, cover the pot with a bag and pierce it in the center. For best results, add a teaspoon of honey, sugar or molasses.