This is also called budding. After spraying, your problem can be worse than at the beginning. When you bait, you will want a slow acting bait. Quick kill insecticides and baits will only kill the foraging ants, not allowing the foraging ants to take the bait back home to feed the queen, nest workers and brood. If the current ant bait that you are using is not acceptable to the ants, if they are not visiting the bait, it is recommended that you change the baits.
Ants require carbohydrates-sugars, proteins and greases.
They find a variety of these sources in nature. Choosing a bait would require knowing what they are currently feeding off of, according to the nutritional needs of the colony. They like to nest in moist soil next to buildings or under them. They can be found near sidewalks or plants. They nest near water and food sources.