You spot a tiny bug hovering in your kitchen, and next thing you know, there are dozens or even hundreds of them.Fruit flies are some of the most annoying pests to get rid of, especially once they’ve locked on to a food source in your home. And unfortunately, your living space is probably full of tasty treats, from fruits and veggies to sugary snacks. <!–> CNETWith fruit flies, an ounce of prevention is worth a pound of cure. We asked Jody Green, an entomologist at the University of Nebraska-Lincoln, what causes…