Soap Trap. Combine apple cider vinegar and a few drops of dish soap in a wide, shallow bowl and place it on the counter uncovered. The cider will lure the flies into the bowl and the soap will break the surface tension, causing the fruit flies to drown.

How do fruit flies die naturally?

Some fruit flies hide in sink drains. … Instead, pour a 50-50 mixture of hot water and white vinegar down drains to kill drain flies and fruit fly eggs they’ve laid. Do this daily until they’re gone. (Here are more ways to clean stinky drains where pests like to breed.)

What causes fruit flies to die?

Cold temperatures, however, will stunt the development of new generations of fruit flies. Scientists have found that at 60°F, the lifespan of fruit flies decreases. When the temperatures fall below 53°F, these flies stop developing entirely.