Signs of Carpenter Ants & How to Get Rid of Them
Carpenter ants are one of the most destructive pests in North Carolina and South Carolina homes. Unlike termites, they do not eat wood. They tunnel through it, which means they can weaken structural elements without leaving obvious signs until the damage is done.
If you are seeing large black ants or hearing faint rustling in your walls, it is time to take a closer look. Here is how to identify a carpenter ant infestation and the best ways to get rid of them before they cause serious damage.
What Are Carpenter Ants?
Carpenter ants are large ants, usually black or dark reddish, that nest in wood. They are especially active in spring and summer, thriving in damp, decaying, or hollow wood.
While they do not eat the wood like termites, they chew it to create galleries for nesting. Over time, this can compromise the structural integrity of your home. Not sure if you are dealing with termites or carpenter ants? Check out this help guide on how to tell the difference between termites and carpenter ants.
Where Carpenter Ants Actually Nest Inside Your Home
Finding frass or a trail of large black ants is one thing. Knowing where the colony is living is what determines whether treatment works. Carpenter ants excavate galleries inside wood, and the location of those galleries depends on where moisture has softened the structure enough to make tunneling easy.
The most common nesting sites we find in North Carolina and South Carolina homes:
- Window and door frames where exterior caulk has failed and water seeps in over time
- Roof eave areas and fascia boards, especially where gutters overflow or debris holds moisture against wood
- Crawlspace sill plates and floor joists in homes with poor ventilation or standing groundwater
- Wood around plumbing penetrations in bathrooms and kitchens, particularly under sinks and around tub surrounds
- Deck ledger boards where they attach to the house and trap moisture behind them
One detail that surprises a lot of homeowners: the ants you see walking across your kitchen counter are almost never where the nest is. According to the National Pest Management Association, carpenter ants forage up to 300 feet from the colony. That trail in your kitchen is likely coming from a satellite colony or a parent colony somewhere in the wall or subfloor, not from an ant that lives near your fruit bowl.
Satellite colonies complicate things further. A mature carpenter ant colony will often establish smaller, secondary nests nearby, sometimes inside the house while the parent colony stays in a dead tree or wood pile in the yard. Treating only the indoor activity without addressing the outdoor parent colony is one of the most common reasons problems come back after DIY attempts. You're not failing because the product didn't work. You're failing because the source was never found.
Our team traces activity back to its origin rather than treating what's visible on the surface. That inspection step is usually what separates a lasting result from a temporary one. If you're seeing signs of carpenter ant activity anywhere in our service area across the Carolinas, the right move is to get eyes on it before the colony gets any larger. Request an inspection and we'll locate the nest, not just the foragers.
7 Common Signs of Carpenter Ants
Wondering if you have carpenter ants? Look for these key signs:
- Large black ants inside your home
- Especially near windows, doors, or water sources like sinks and dishwashers.
- Sawdust-like material (frass)
- Carpenter ants push out debris as they tunnel. You may find piles of frass below baseboards or in crawlspaces.
- Rustling or faint chewing sounds
- In quiet areas, you might hear activity inside the walls.
- Hollow sounding wood
- Tap baseboards or wooden beams. If it sounds hollow, ants may be inside.
- Shed wings or swarmers
- Reproductive ants may swarm inside or near your home, often in spring.
- Moisture damage or leaks
- Carpenter ants are drawn to damp wood. Homes with plumbing issues, roof leaks, or poor ventilation are at higher risk.
- Ant trails or nests outdoors
- If you see trails of large ants outside, especially on trees, decks, or fences, they may be nesting nearby.
How to Get Rid of Carpenter Ants
1. Locate the Carpenter Ant Nest
Killing foraging ants will not solve the problem. You have to find and eliminate the nest, which may be indoors, outdoors, or both. Pros use tools like moisture meters, borescopes, and bait tracking to locate hidden colonies.
2. Use Targeted Carpenter Ant Treatments
Professional grade insecticides, baits, and dusts can eliminate entire colonies rather than just surface activity. Treatments should be applied inside wall voids, behind trim, and in active nesting zones.
3. Seal Easy Ant Entry Points
Once the colony is gone, seal up cracks, gaps, and utility lines where ants may enter. This helps prevent re-infestation.
4. Fix Any Leaks and Address Moisture Issues
Address leaks, ventilation, and rotted wood. Moisture is the top attractant for carpenter ants and many other pests.
5. Schedule Professional Pest Control Service
DIY solutions rarely work long term. Our licensed team can:
- Locate hidden nests
- Apply safe, effective treatments
- Protect your home with a preventative plan
Why Carpenter Ants Keep Coming Back
Even after a treatment, carpenter ants can return if:
- A satellite colony was not found
- Entry points remain open
- Moisture problems were not resolved
That is why follow up visits and inspection based plans are key. We offer quarterly pest protection plans tailored to homes and businesses, ensuring carpenter ants stay gone for good.
Serving Communities Across the Carolinas
Our team works from across the Triangle all the way to North Myrtle Beach, including:
- Fuquay-Varina pest control
- Durham pest control
- Fayetteville home pest control
- Wilmington pest control
- North Myrtle Beach pest control
- And more. Check out our full service areas here.
Whether it is a residential issue or a recurring commercial problem, we have the tools to help.
FAQ: Carpenter Ants
What's the difference between carpenter ants and termites?
Termites eat wood, while carpenter ants tunnel through it. Ants are usually larger with bent antennae and narrow waists. Termites have straight antennae and equal sized wings.
Are carpenter ants dangerous?
While they do not sting or bite often, they are destructive to homes. Their tunneling can weaken wood over time and lead to costly repairs.
Can I treat carpenter ants myself?
DIY sprays may kill some ants but rarely reach the nest. Without locating and eliminating the colony, infestations will return.
When are carpenter ants most active?
Spring and early summer are peak activity times, especially after rainfall or warm, humid weather.
How soon should I call a pest control company?
As soon as you notice signs like frass, swarming ants, or wood damage. Early treatment prevents structural issues and higher costs.
Schedule Carpenter Ant Control Today
Do not wait until the damage is done. If you have noticed any of the signs above, call Pest & Termite Consultants at (919) 246-8831 or request a free inspection.
We will help you identify carpenter ants, eliminate the nest, and put a plan in place to keep them out, guaranteed.
