If you’re seeing large black ants crawling along your baseboards, windows, or kitchen counters, you might be dealing with carpenter ants—and they’re not just a nuisance.
Unlike typical ants, carpenter ants can damage your home.
They don’t eat wood like termites, but they tunnel through it to build nests. Over time, that can weaken structures like window frames, decks, and even support beams.
Let’s walk through how to identify them, eliminate them, and keep them from coming back.
What Are Carpenter Ants?
Carpenter ants are one of the largest ant species in Ohio, typically black but sometimes reddish or a mix of both.
Key signs you have carpenter ants:
- Large ants (¼ to ½ inch long)
- Sawdust-like material (called frass) near walls or windows
- Rustling sounds inside walls
- Ant trails, especially at night
- Winged ants (swarmers) in spring
If you’re seeing these signs, it’s likely more than just a few ants—it could be a growing colony inside your home.
Why Carpenter Ants Are a Problem
Carpenter ants don’t just wander in from outside.
They’re usually nesting inside your home or very close to it.
They prefer:
- Moist or water-damaged wood
- Crawl spaces and basements
- Window and door frames
- Decks and porches
Over time, their tunneling can cause real structural damage—especially if left untreated.
How to Eliminate Carpenter Ants
1. Find the Nest
The most important step is locating the colony.
Look for:
- Areas with moisture (leaky pipes, damp wood)
- Ant trails leading to walls or hidden spaces
- Piles of frass (fine wood shavings)
Without eliminating the nest, the problem will keep coming back.
2. Use Targeted Baits (Not Just Sprays)
Spraying ants might kill the ones you see—but it won’t solve the problem.
Baits work better because:
- Ants carry the bait back to the colony
- It spreads through the population
- It targets the queen
Look for slow-acting ant baits specifically labeled for carpenter ants.
3. Eliminate Moisture
Carpenter ants are drawn to damp wood.
Fixing moisture issues is critical:
- Repair leaky pipes or roofs
- Improve ventilation in basements and attics
- Replace rotted wood
This makes your home far less attractive to them.
4. Seal Entry Points
Even after treatment, ants can return if your home is easy to access.
Seal:
- Cracks in the foundation
- Gaps around windows and doors
- Utility entry points
This step helps protect your home long-term.
5. Call a Professional (Best Long-Term Solution)
Carpenter ants can be tough to fully eliminate without professional help.
A pest control expert will:
- Identify all nesting sites (including hidden ones)
- Use professional-grade treatments
- Create a barrier around your home
- Provide ongoing prevention
How to Prevent Carpenter Ants
Once they’re gone, keeping them out is the goal.
Prevention tips:
- Keep firewood away from your home
- Trim tree branches touching your house
- Clean up food and spills quickly
- Store food in sealed containers
- Maintain dry, well-ventilated spaces
When to Take Action
If you’re seeing:
- Large ants regularly indoors
- Winged ants in your home
- Signs of wood damage
…it’s time to act.
Carpenter ants don’t go away on their own—and the longer they stay, the more damage they can do.
Need Help Eliminating Carpenter Ants?
At Snowball Pest Control, we specialize in protecting homes across Greater Cincinnati from carpenter ants and other pests.
We don’t just treat the problem—we eliminate it at the source and help prevent it from coming back.
Contact us today for a free inspection and let’s take care of it for good.
