N.G.
We have dealt with many fruit fly infestations so I know how annoying they are, but I promise you the soapy concoction works. Get a big clear bowl, fill it with warm water. Add a few tablespoons of honey and stir it around. Add some fruity-smelling dish soap to the water and swish it around until there are bubbles covering the surface. The fruit flies will be attracted to the sweet smell of the honey and will get stuck in the bubbles and die. It works like a charm.
While that's working you have to get rid of all food sources. NO food in the sink, make sure all counter tops are santized, trash is covered. It means staying on top of dishes going into the dishwasher during the day (annoying, I know).
Good luck! We have a fly infestation right now, but it's par for the course with having guinea pigs so we just have to deal with it until winter comes. Poo.