Fruit Fly Trap Recipe
- 1 pint mason jar or 1 recycled baby food jar, with lid if possible
- hammer and standard nail OR ice pick OR plastic wrap, rubber band and a fork/skewer/toothpick
- 1/4–1/2 cup apple cider vinegar, wine, stale beer or bourbon (white vinegar does not work well)
- small piece of old, overripe fruit
- 2-3 drops of dishwashing soap (this breaks the surface tension of the liquid, making it hard for the flies to escape)
- If you have the lid for your jar and want to make a long-lasting, spill-resistant trap, use an icepick or nail to poke 8-12 holes into the lid. You want the holes big enough for a fruit fly to enter, about 1/8 of an inch. (Don’t worry, they are too dumb to get out of such small holes, plus the dishwashing soap will help drown them.)
- If you don’t have the lid or want to make a temporary trap, use a piece of paper or plastic wrap and a rubber band to tightly cover the top of the jar. Poke several holes into it with a fork, skewer or toothpick.
- Fill the jar with about a half inch to an inch of apple cider vinegar, wine, beer or liquor. Stir in a couple drops of dishwashing soap, then place a small piece of overripe fruit into the middle of the liquid. Make sure the fruit is big enough to stick out of the liquid a little.
- Place the trap (or traps) where you normally see fruit flies. Every 2-3 days, dump the contents of the jar down the drain or into the compost pile, and start again with a fresh vinegar mix.