Most pests infest due to an unclean environment. Make sure that no crumbs are left in the sinks or any corner of the home which acts as a feast to the ants. Also when you get plants check if they are infected by any pest. Do not have trees or shrubs touching home windows as they can be a source of direct entry. Seal the openings of the electric wiring and plumbing for prevention. Always clean the kitchen after cooking, because any trail of food or liquid will invite the ants.