We’ve been struggling with fruit flies in the kitchen, around our fruit bowl. We tried to get rid of them by just squishing them, and then by vacuuming them up, but it hardly made a difference.

Then I consulted the Internet. The Internet suggested a liquid trap for them, with a tasty liquid (vinegar, juice, wine, sugar water) and a few drops of dishwashing detergent.

For the sake of experiment, we made two traps: one with apple juice (which seemed reasonable since they like fruit) and one with red wine vinegar (which several online sources suggested as particularly effective). And it worked like a miracle. After a few hours the apple juice had trapped 4 or 5, while the vinegar trap had 17 dead fruit flies. Since then the number of dead flies keeps increasing and we hardly ever see any live ones flying around – they must go directly from hatching to drowning. Great trick!