If none of the low-tech hacks in here seem to work, or you have the same kind of gadget addiction as me, I can recommend the "Katchy" brand of bug catchers. The

If none of the low-tech hacks in here seem to work, or you have the same kind of gadget addiction as me, I can recommend the "Katchy" brand of bug catchers. They work at night with UV light, and have decimated the fruit fly population in my kitchen.