I just read something hilarious on how to get rid of fruit flies.
Hair dryer method
* locate the general area of the fruit flies and the nearest plug. Get a hair dryer.
* Plug in the hair dryer, turn it on (preferably to full heat) and put the back end of the dryer near a hovering fly. It will be sucked in and fried by the hair dryer. This is fun and highly effective! Trying to blow at them with the hot air doesn't work well, but sucking them in like this does.