Gnats, Fruit flies and Drain Flies are the worst. If they’re not coming from your fruit bowl, they’re probably hanging out in your drain. So how do you get rid of these elusive creatures when they’re out of sight? Try Fruit Fly Goodbye. This handy treatment coats and clings to pipe walls to kill drain flies. Use Fruit Fly Goodbye to take care of the gnats, drain flies and fruit flies swarming around your drain. Fruit Fly Goodbye’s thick gel formula clings and covers pipe walls to kill drain flies. This product is perfect for homes, hotels, restaurants, bars, really anywhere with gnats, drain flies & fruit flies. Use it in the kitchen or bathroom if needed .