360.859.9090 | 503.405.4300

Carpenter Ants

Carpenter ants are the largest ants (3.4 to 14mm long) most people will ever see in their lifetime.  Carpenter ant colonies in the Portland, OR; Vancouver, WA and Camas metro area can be massive, reaching up to 100,000 workers.

Pest Information

The two most common species in the Northwest are C. Modoc & C. Vicinus.  Both species are primarily nocturnal but can also be active during the day.  Most people think of carpenter ants as big and black however they’re “polymorphic,” which means the worker ants vary in size.  Carpenter ants can also vary in color with red or yellow hues on their usually black body.

Why They’re Bad

Carpenter ants cause more economic damage in the state of Washington than any other state in the U.S.  and Oregon isn’t far behind.  

Pacific Northwest carpenter ants can destroy sound or damaged wood.  Outdoor nesting sites tend to be inside trees, under stumps and rocks, or in landscape timber.  In homes carpenter ants usually nest inside wood and various kinds of insulation.  Within the home, the nest (or nests) is almost always a “satellite” colony.  The main carpenter ant colony may be up to 250 yards away.

Carpenter ants are called “carpenters” for a reason.  They do not eat wood for nutrition like termites.   Rather they excavate their nests in wood creating smooth galleries and tunnels.  The displaced wood is fine like sawdust with insect parts and dead ants usually mixed in.  A severe carpenter ant infestation is most often connected to a moisture problem somewhere inside the home.

An Aspen Pest Control service technician drilling a tiny 1/8-inch hole in the wall for a foam injection at a home in Camas, WA

Carpenter Ant Treatment

How Do I Get Rid Of Carpenter Ants?

It may not come as a revelation that carpenter ants can be extremely destructive if left untreated.  The extent of damage inside a home depends mostly on two things: First, how many carpenter ants there are and second, how long the ants have been active.  If you notice carpenter ant activity in or around your home, it’s vital to get a professional carpenter ant inspection immediately. Early intervention is critical when dealing with wood destroying organisms.

An exterminator spraying the exterior of a beautiful house in Vancouver, WA.
  • Customer Satisfaction 100% 100%

Full Satisfaction Guaranteed

When you hire Aspen Pest Control you won't have to worry about whether our service will solve your pest problem. We provide our home protection plan customers with a full satisfaction guarantee. This means that if the pests come back, Aspen comes back in between your regular services absolutely free of charge!

Vancouver Office:


12104 NE 95th St.
Vancouver, WA 98682

Portland Office:


8305 SE Monterey Ave
Suite 220 Q
Happy Valley, OR 97086

Mailing Address:

19215 SE 34th St
Suite #106-155
Camas, WA 98607

Get A Quote

  • This field is for validation purposes and should be left unchanged.

What's Bugging You?