Surface Tension
I bought a nice ripe pineapple a few days ago. I took a little too long to cut it up for chutney, resulting in hundreds of little fruit flies.
I found a good way of getting rid of them. A glass of vinegar, with a dash of dishsoap.
They land on the surface of the vinegar, and sink. No surface tension. Most of the flies were gone in 12 hours.
