Clean the Cans
One thing that attracts fruit flies is beer or soda cans. If you save them to later recycle them, this could be the source. You will either have to rinse out each can or put them in a sealed garbage bag or container.
Amy
Make a "Fly Trap"
I worked at a bar where fruit flies can be a problem. We put a small amount of red wine into a shallow dish, covered it with plastic wrap, and then poked a hole into it. This "fly trap" worked so good that it had to be changed every couple of days.
Arturo
A Fruit Fly Solution from Down Under
I grow tomatoes, and I h