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May 27, 2025

Drywall Signs of Carpenter Ants

Carpenter ants can be stealthy invaders, damaging your home from the inside out. Often, they go unnoticed until significant damage has been done. But never fear—with a few keen observations and preventative steps, you can stop these tiny engineers from turning your walls into their personal amusement park. In this guide, we'll walk through the tell-tale signs of carpenter ant activity in drywall, and how you can protect your home from these unwelcome guests.

 

Understanding Carpenter Ants and Their Habits

Carpenter ants are known for their ability to destroy wood, not by consumption, but through excavation to build their nests. These ants usually exhibit a black or brownish color, and workers can measure up to 0.5 inches, with queens reaching as large as an inch. Unlike termites, carpenter ants cut through the wood to create galleries to live in, not to ingest it, making regular home inspections critical.

Signs of Carpenter Ants in Drywall

drywall signs of carpenter ants photo

Spotting the signs early can help prevent extensive damage. Here are some common indicators that carpenter ants have settled into your drywall:

  • Sound: Listen for a faint rustling sound or scratching noises coming from the walls. This noise is caused by ants moving within the wood and drywall as they build and extend their colony.
  • Visual Sighting: Seeing large black ants inside your home, particularly near walls and baseboards, is a strong sign. Carpenter ants don't try to be discreet when they're out foraging for food.
  • Frass: Keep an eye out for piles of wood shavings or sawdust-like material, known as frass, beneath wooden areas. This is a byproduct of their tunneling and nest building.
  • Hollow Sounding Wood: When you knock on areas of your drywall and it sounds hollow, the wood inside might be compromised by tunnels made by carpenter ants.
  • Shed Wings: Finding discarded wings near windowsills or door frames can indicate that ant swarmers are looking to form a new colony.

Where to Check for Activity

drywall signs of carpenter ants photo

Carpenter ants are particularly attracted to moist and decaying wood, which can often be found in:

  • Basements and crawl spaces with leaks or high humidity.
  • Under sinks and in bathrooms where plumbing leaks are common.
  • Near window sills and door frames that have exposure to exterior weather conditions.

Impact of Carpenter Ants on Home Structure

If left unchecked, carpenter ants can cause severe structural damage to your home. Their tunneling weakens wooden structures, potentially threatening the integrity of walls, beams, and other critical components. In regions like the Pacific Northwest where the climate favors these pests, their damage can rival even that of termites.

Addressing and Preventing Carpenter Ant Infestations

Once you've identified a potential infestation, it’s essential to take immediate action to prevent any further damage:

  • Professional Inspection: Engaging a pest control expert can confirm an infestation and help locate the nests. An expert can provide appropriate treatment solutions.
  • Reduce Moisture: Ensure your home is free of leaks, and maintain proper ventilation in areas prone to moisture buildup to eliminate attractive nesting spots for ants.
  • Seal Cracks: Close gaps around windows, doors, and other entry points to prevent ants from entering your home.

For proactive homeowners, regular maintenance and vigilance are key. Check out this guide on preventing carpenter ant infestations for useful prevention tips and techniques.

Frequently Asked Questions

How can I tell if there are carpenter ants in my walls?

Look for signs such as faint rustling sounds from within the walls, piles of frass near baseboards, and physical sightings of ants inside your home. Scratching or rustling noises are strong indicators of nesting activity.

Can carpenter ants chew through drywall?

Yes, carpenter ants can tunnel through drywall, especially when it is damp. They create these tunnels to build galleries for their colonies. If your home has moisture issues, it could be at a higher risk for these damage patterns.

What should I do if I suspect a carpenter ant infestation?

Immediately reach out to a professional pest control service to inspect your home. It's important to address the issue quickly to prevent further structural damage and ensure the colony is fully eradicated. For comprehensive damage prevention, visit this expert article on carpenter ants.

How To Get Rid Of Carpenter Ants (4 Simple Steps)

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Matt Thompson

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Matt Thompson is a seasoned architectural writer with a strong background in urban development and design, contributing to Architecture Adrenaline with over a decade of industry experience.
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