should you ever find your kitchen overrun by fruit flies, i don’t suggest trying to swat them all with a fly swatter. they are too small – they can escape through the wires of the swatter, and they are too fast – they scoot away.
this plastic wrap-glass trap works like a charm, though.
1. put apple cider vinegar in glass
2. cover with plastic wrap
3. poke a dozen holes in plastic wrap with toothpick
4. flies get in but can’t find their way out
another suggestion i read on the internet is to put a rotting banana in the oven with the door open overnight. the flies attack the banana. early in the morning sneak in the kitchen and close the oven door before they can escape. turn the oven on to 425.