I think everyone has a story or two about bats. I've got one, but will share that another time.
As for your fruit fly situation....clean up the area as Deb suggested and clean with vinegar. I use a concoction that seems to work well and it's very inexpensive.
1 small bowl
Fill bowl with 1/2" of warm water
Add 3 - 4 drops of dish soap
1 teaspoon of honey.
Mix well until disolved. Set the bowl out and watch it attract the bugs! All those little knats that fly around as well as fruit flies can not resist the sweet smell. This mixture will attract them, make them stick around, and drowns them. All at once.
