Pavement Ants in Coastal Southeastern North Carolina
Pavement ants are the small dark ants you see emerging from cracks in driveways, sidewalks, and patios. They nest under hardscape and slabs, then forage into nearby yards and homes looking for food. They’re not aggressive or destructive, but their persistent indoor activity makes them a nuisance.
How to Identify Pavement Ants
- Size: 1/8 inch (small and uniform)
- Color: Dark brown to black
- Shape: Two-segmented waist, parallel ridges on the head and thorax
- Antennae: 12-segmented with three-segmented club
- Behavior: Slow-moving compared to other ant species, often visible in foraging trails on patios and driveways
The parallel ridges on the head and thorax are distinctive but require close inspection to see.
Where Pavement Ants Nest
The name says it all. Pavement ants prefer to nest:
- Under driveways and sidewalks
- Under slab foundations
- Along patio edges
- Under stones, logs, and landscape edging
- Beneath cracks in concrete or asphalt
You’ll often see small mounds of soil (frass) pushed up through cracks where they’re nesting underneath. After heavy rain, these mounds become more pronounced as the colony rebuilds.
How to Tell Black from Red Imported
The two species look similar at a glance, behave identically, and sting just as painfully.
The reliable identifier is color:
| Feature | Red Imported | Black | Hybrid |
|---|---|---|---|
| Color | Reddish-brown head/thorax, darker abdomen | Uniformly dark brown to black | Intermediate, variable |
| Range in coastal NC | Dominant species | Extremely rare | Extremely rare |
| Mound appearance | Dome-shaped, loose soil | Same dome shape | Same dome shape |
| Sting | Severe, painful | Severe, painful (identical) | Severe, painful (identical) |
| Treatment approach | Bait + direct mound treatment | Same as RIFA | Same as RIFA |
If you’re in coastal NC and have fire ants, the simplest explanation is correct: they are Red Imported.
Visit the Red Imported Fire Ant page for full identification details, sting information, and treatment specifics.
How They Get Inside
Pavement ants enter homes through:
- Cracks in the foundation
- Gaps around plumbing and utility penetrations
- Under door thresholds with worn weather stripping
- Through expansion joints in slab construction
Once inside, they follow scent trails to food sources, particularly sugary or greasy items in kitchens.
How Healthy Home Treats Pavement Ants
Pavement ants are covered under all four annual protection plans. Treatment combines:
- Inspection of slab edges, driveway cracks, and exterior foundation
- Bait placement along foraging trails
- Residual treatment at entry points and crack-and-crevice locations
- Quarterly follow-up to maintain pressure
Covered Under:
- Home + Yard Protection ($935/year)
- Home + Mosquito Protection ($1,250/year)
- Ultimate Protection Plan ($1,545/year)
- Essential Home Protection (does not include yard treatment)
Frequently Asked Questions
Pavement ants nest under sidewalks, driveways, and slab foundations. They push out small piles of soil at the cracks (called frass mounds) and forage for food in nearby yards and homes. The cracks themselves provide warmth and protection for their colonies.
Pavement ants can bite and sting, but both are very mild and rarely cause more than slight irritation. They’re not aggressive and don’t pursue humans. They’re primarily a nuisance pest, not a health threat.
Pavement ants enter through cracks in the foundation, gaps around plumbing penetrations, and any opening that connects an outdoor nest under a slab to the interior. They follow scent trails to food sources inside, particularly in kitchens and pantries.