Vinegar is a natural insect repellent, and it's been used for centuries to keep pests at bay. The acetic acid in vinegar is what makes it so effective - it's like a toxic cocktail for fruit flies. But will regular vinegar do the trick, or do you need some special kind of fruit fly-fighting vinegar?
It turns out that regular vinegar will indeed work for fruit flies - but only if you use it in the right way. You see, fruit flies are attracted to the smell of fermentation, which is what makes vinegar so appealing to them. So, if you mix equal parts water and vinegar in a jar, cover it with plastic wrap, and poke some tiny holes in it, you've got yourself a homemade fruit fly trap!