This time of year my kitchen is always full of bowls of veggies from the garden -- tomatoes, cucumbers, peppers -- waiting for me to process them in some way or other. Bowls of veggies result in pesky fruit flies, but I've discovered that putting out a couple of small containers (I use juice glasses) with about an inch of cider vinegar in them, with a drop or two of dish soap added (to reduce the surface tension) will attract and drown the flies.