A unitary system of government, or unitary state, is a sovereign state governed as a single entity. The central government is supreme, and the administrative divisions exercise only powers that the central government has delegated to them.
So, preventing an infestation of ants or getting rid of ants is a matter of closing entry points, repelling them, and practicing daily routines of cleanliness. 1  Follow them. 2  Close gaps and/or apply natural repellents those entry ways.  Practice cleanliness and routine maintenance.
Sugar ants invade homes in the early spring and fall because they are looking for food and a cool, dark, moist, wooded area to make a nest to support their colony. Some older homes tend to attract more of these types of ants because they usually have plenty of cool, dark, moist areas and are much easier to get into.