Hello, I would like some help identifying the flies that have infested my home for a year now. I thought they were fruit flies but there is no food around for them- eveything is tightly sealed or refrigerated. I tried pouring apple cider vinegar in a bottle to trap them with no success. I also tried it with wine- it only worked once in the summer but hadn't attracted then since. They like to be in my bedroom, kitchen and bathroom mainly. They are everywhere but those are the places where they cluster the most. The house is cleaned daily with bleach. We have tried insecticides with no success. Even when sprayed directly at them, they continue flying around. They first came last spring and left briefly in the fall but were back again throughout the winter. They look like black fruit flies to me but I can't be sure. They are very small and I never see larger regular house flies.