The insects are only winged when they are reproducing, so a winged colony is a growing colony. Most infestations will not solve themselves. You have to provide the right poison bait that will be carried to the nest, find and remove the nest yourself, or hire professional help to do so. Locate the nest by noticing where the ants crawl after they've eaten. Sometimes they nest near wet wood and can enter your house through cracks in your bathroom tiles, a leaky sink, a leaky toilet, a leaky pipe, or water seeping down an exhaust vent.
Most ants live near bathrooms, kitchens, foundation cracks or leaky roof joints.
If you can find the nest, destroy it. If you can't find it, at least become keen observers of where the ants go and hire a pest control company. Once the nest has been found, it needs to be removed and the queen ant has to be killed. Reputable pest control service may use chemical or nonchemical means to remove the nest and treat your home over the course of a year to stop subsequent infestations. Most firms that remove ant nests recommend a series of follow-up visits in one package price.