8. Sugar and Yeast Fruit Fly Trap
Yeast feeds on sugar and produces a fermented smell that can attract fruit flies. This method is helpful when apple cider vinegar is unavailable.
What You Need
- One small jar
- Half a cup of warm water
- One tablespoon of sugar
- A small pinch of active dry yeast
- One drop of dish soap
- A paper funnel or plastic wrap
How to Make It
Add warm—not boiling—water to the jar. Stir in the sugar, then sprinkle in the yeast. Allow the mixture to activate for several minutes.
Add one drop of dish soap and cover the container with a paper funnel or perforated plastic wrap.
Who It Suits Best
This trap is suitable for households that bake regularly and already have dry yeast in the pantry.
Setup Tips
Do not fill the jar too high because an active yeast mixture may foam. Leave enough empty space at the top.
Replace the mixture when it loses its fermented scent or becomes excessively cloudy.
Benefits
- Does not require vinegar or alcohol
- Produces a fresh fermented aroma
- Uses basic baking ingredients
- Works well inside an enclosed jar
- Can remain attractive for more than one day
