Carpenter Ants in Maine: Signs, Damage, and How to Get Rid of Them

Carpenter ants are one of the most common and destructive household pests in Maine. Unlike termites, carpenter ants do not eat wood — but they tunnel through it to build nests, which can eventually lead to costly structural damage if left untreated.

At All-Points Pest Control, carpenter ant issues are one of the most common calls we receive throughout the warmer months. Knowing what to look for early can help prevent a small problem from becoming a major infestation.

What Are Carpenter Ants?

Carpenter ants are large ants that commonly nest in:

• Damp wood

• Decaying wood

• Wall voids

• Window frames

• Decks

• Rooflines

• Tree stumps and fallen logs

In Maine, the most common carpenter ants are black and can range from about 1/4 inch to over 1/2 inch in size.

They are especially active during spring and summer, though indoor infestations can remain active year-round.

Signs of a Carpenter Ant Infestation

Many homeowners don’t realize they have carpenter ants until the infestation has already grown significantly. Common warning signs include:

Large Ants Inside the Home

Seeing large black ants indoors — especially repeatedly — is often the first indicator.

Rustling or Scratching Sounds

In quiet conditions, carpenter ants can sometimes be heard moving inside walls or wood structures.

Piles of Sawdust-Like Material

Carpenter ants create smooth tunnels and push debris out of their nests. This material, called frass, often looks like small piles of sawdust mixed with insect parts.

Winged Ants Indoors

Flying carpenter ants inside the home may indicate a mature colony nearby.

Increased Night Activity

Carpenter ants are often most active after sunset.

Why Carpenter Ants Can Cause Serious Damage

Carpenter ants excavate galleries inside wood to expand their nesting areas. Over time, this tunneling can weaken:

• Decks

• Support beams

• Window frames

• Sills

• Wall structures

• Garages and sheds

Moisture problems often make structures more attractive to carpenter ants, which is why infestations commonly begin in:

• Areas with roof leaks

• Water-damaged wood

• Poorly ventilated spaces

• Around chimneys or gutters

The longer the colony remains active, the more extensive the damage can become.

DIY Treatments Often Miss the Main Nest

Store-bought sprays may kill visible ants temporarily, but they often fail to eliminate the primary colony hidden inside walls, ceilings, or exterior structures.

In many cases:

• multiple satellite colonies exist

• nests are hidden deep inside structures

• surface treatments only reduce visible activity temporarily

Professional inspection is usually needed to locate the source of the infestation and properly treat it.

How Professional Carpenter Ant Control Works

At All-Points Pest Control, carpenter ant control focuses on:

• identifying nesting areas

• locating moisture issues

• treating active colonies

• reducing conditions that attract ants

• helping prevent reinfestation

Every home is different, so treatment plans are customized based on:

• construction type

• infestation severity

• nesting locations

• surrounding environment

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Tips to Help Prevent Carpenter Ants

Homeowners can reduce the risk of carpenter ant problems by:

• Fixing water leaks promptly

• Replacing rotting wood

• Keeping gutters clear

• Trimming tree branches away from the home

• Storing firewood away from the structure

• Reducing excess moisture around foundations

Preventive maintenance can make a major difference over time.

Carpenter Ant Control in Maine

If you’re seeing large ants indoors, noticing sawdust-like debris, or suspect carpenter ant activity around your home, it’s best to address the issue early before damage worsens.

Contact All-Points Pest Control today for professional carpenter ant inspection and treatment services in Maine.