Fruit flies are revolting and too quick to catch. Here's how to banish them from your home:
Grab a few ramekins or shot glasses. Pour some apple cider vinegar in them. Cover them with plastic wrap, then secure with a rubber band, because plastic wrap is terrible and it never, ever sticks to anything. Use a toothpick to poke a few holes in the plastic wrap.
The fruit flies will squeeze through the holes to drink the delicious vinegar (?), but be unable to squeeze back out. After an hour or so, they'll drown. Unlike an ant trap, you can track your progress and delight in the deaths of each and every one. Take that, motherfuckers! (The fruit flies, not you.)