Carpenter ants: The Wood Destroyers
Carpenter ants (Camponotus spp.) are among the most destructive ant species in North Carolina. Unlike termites, they do not eat wood; they excavate it to create smooth galleries for nesting. A mature colony can contain thousands of workers and multiple satellite nests. They are most active at night and often enter homes through moisture-damaged wood, such as around windows, roofs, and porches. Signs include sawdust piles (frass), rustling sounds in walls, and large black ants (up to 1/2 inch) indoors. Treatment requires locating and treating all satellite nests, often using dusts or foams in wall voids. Prevention focuses on eliminating moisture sources and sealing entry points.
Fire ants: A Stinging Threat
Red imported fire ants (Solenopsis invicta) are an invasive species that has spread across the southern US, including much of North Carolina. They build large mounds in sunny areas like lawns, pastures, and roadsides. When disturbed, they swarm and deliver painful stings that can cause pustules and, in sensitive people, severe allergic reactions. Fire ants cause an estimated $6+ billion in damage and control costs annually in the US. A single mature colony can contain 100,000–500,000 workers. Control methods include mound drenches, granular baits, and broadcast treatments. In North Carolina, fire ant suppression is a public health priority, and many municipalities conduct area-wide treatments.
Odorous House ants: The Most Common Invader
Odorous house ants (Tapinoma sessile) are the most common ant pest in North Carolina homes. They are tiny (1/16 to 1/8 inch), dark brown to black, and emit a rotten coconut smell when crushed. They forage in long trails, especially for sweets, and nest in shallow soil, under mulch, or in wall voids. Colonies are large and can have multiple queens, making them difficult to eliminate. Baiting is the most effective treatment, as sprays only kill foragers. Keeping kitchens clean and sealing entry points helps prevent infestations. These ants do not cause structural damage but are a major nuisance in food preparation areas.
Major-City Ant Guides in North Carolina
Property conditions vary across North Carolina, so the state overview should lead readers to city guidance without treating a city name as a diagnosis. The linked guides cover major local building, moisture, landscape, and access considerations while keeping species identification and provider terms property-specific.
The research on ants in U.S. homes
The statements below are tied to named surveys, studies and published cost guides, and each one says what it does and does not prove. They describe patterns across many households, which is useful context, not a diagnosis of any one property. Sixty-four percent of the professionals surveyed by the National Pest Management Association (NPMA) in late 2011 and early 2012 named spring as one of their busiest ant seasons, a figure about pro workload rather than the share of homes with spring ants. The National Pest Management Association (NPMA), in Harris Poll findings released July 6, 2026, said 33% of U.S. respondents knew someone currently dealing with ants, a measure of visibility rather than a count of infested homes; the release did not report the sample size. A homeowner budgeting for ant control should allow for a third visit: 20% of professionals in the National Pest Management Association's 2011–12 survey said that was typical, though the figure reflects how pros worked then, not an infestation rate. Homeowners who find ants near a sink or tub are seeing something professionals see constantly: 89% of pros in the National Pest Management Association's 2011–12 survey had treated bathrooms, though that measures pro experience, not how many homes are affected. In ConsumerAffairs' February 2024 survey of 2,000 U.S. respondents on household infestations (self-reported, covering pests and mold together), 14% said an infestation had required renovation work, a general consumer figure that does not indicate which pest was responsible or how many homes are infested. If one number should shape your next step, it is how often do-it-yourself attempts fall short. That is not an argument against trying, but it is a reason to set a deadline and call a professional if the problem persists past it.