How to Make a Fruit-Fly Trap That Actually Works

A small apple cider vinegar trap can reduce adult fruit flies, but only if you also remove fermenting food and hidden breeding residue. The trap catches some flies; it does not eliminate their source.

Set up a simple jar

Put a little apple cider vinegar in a stable glass jar or bowl, then add one drop of dish soap to reduce surface tension. Place it near the activity and out of reach of children and pets, away from food preparation.

Find the breeding source

Discard overripe produce, rinse bottles and cans, wash trash-bin lids, and clean sticky spills around drains and recycling. Eggs and larvae can keep developing in organic material that the trap never touches.

Confirm the insect type

Fruit flies tend to hover near fermenting food. Fungus gnats usually rise from damp houseplant mix; fuzzy drain flies may rest near drains. If the vinegar trap attracts very little, identification and moisture control are more useful than adding traps.

Frequently asked questions

When should I expect all flies to disappear?

There is no guaranteed time frame. Persistent new adults mean you should keep looking for the source and maintain sanitation.

Related: how to get rid of gnats in kitchen.