We have had an ample amount of tomatoes in the house lately, and the gnats are horrible. One daughter found this idea on the internet and it works. Simply put fruit in the jar and add a piece of paper. They can get in, but not back out. I added a drop of dawn soap down the center to kill them. Today the jar has twice as many in it. Best thing that has worked so far. We even caught a fly in it.
Inklings from the Farmhouse, embracing balance and new beginnings.