Flies cannot resist the aroma produced by fermentation. In fact, the product used is based on fermented apples, so flies cannot keep their distance from the vinegar.
For greater effectiveness, you can heat the cider vinegar because the heat releases the smell of the vinegar.
You will need a glass and a piece of paper rolled into a funnel, 12 cl of apple cider vinegar, a few drops of dishwashing liquid, and you can decide whether or not to add a piece of ripe fruit.
After heating the apple cider vinegar, pour it into the glass and add the drops of dishwashing liquid. The latter reduces the surface tension of the vinegar.
Then place the funnel in the glass, with a hole at the bottom to let the flies in. Once inside, they cannot get out and will drown.
If they do not drown, you can place the glass in the freezer for 20 minutes.
The Fruit Trap
It consists of the following ingredients: plastic wrap, a glass, ripe fruit, a toothpick and soapy water.
Put the pieces of fruit in the glass and seal it with the plastic wrap pierced with a toothpick.
Place it at strategic points in the house so that flies enter through the holes and cannot get out. Finally, immerse the glass full of flies in a container of hot soapy water for 10 minutes.
Two Other Very Effective Methods
Red wine is another ingredient that strongly attracts flies. You only need a small amount left at the bottom of the wine bottle to collect the flies. For them, it will be a death trap because they start to drown in the remaining wine. Alternatively, you can pour the wine into a container and then cover the glass with perforated plastic wrap.
The last trap is old and used by grandmothers. You need 50 cl of milk, 100 grams of brown sugar and 50 grams of ground black pepper.
Put the pepper, milk and sugar in a saucepan and simmer gently for 10 minutes. Then pour the mixture into empty plates and place them around the house.
When flies are attracted to the mixture, they get trapped and drown in the solution. To make it more effective, you can add a drop or two of dishwashing liquid to prevent flies from escaping from the surface.
Now, all you have to do is choose one of these tips to apply against flies roaming around your house and see for yourself how effective they are.