Carpenter Ants
Camponotus spp.
Carpenter ants are large, black or dark-colored ants measuring 1/4 to 1/2 inch in length. Unlike termites, they don't eat wood but excavate it to create nesting galleries, leaving behind piles of sawdust-like material called frass. These destructive pests are one of the most common wood-damaging insects in North America.
Habitat & Behavior
Carpenter ants prefer moist, damaged, or decaying wood both indoors and outdoors. They commonly nest in wall voids, hollow doors, foam insulation, and wooden structural members. Outside, they inhabit tree stumps, firewood piles, landscape timbers, and fence posts. Satellite colonies may be established inside homes while the main colony remains outdoors.
Signs of Infestation
- Piles of wood shavings (frass) near wooden structures or baseboards
- Rustling sounds within walls, especially at night when they're most active
- Large black ants trailing in lines, particularly in kitchens and bathrooms
- Small openings in wood surfaces with smooth, clean galleries inside
- Winged reproductive ants (swarmers) emerging in spring
Health & Property Risks
Carpenter ants can cause significant structural damage over time by hollowing out wooden beams, joists, and supports. While they don't spread disease, their presence indicates moisture problems that could lead to wood rot and mold. Left untreated, a carpenter ant infestation can compromise the structural integrity of your home and result in costly repairs.
Prevention Tips
- Eliminate moisture sources by repairing leaky pipes, roofs, and gutters
- Remove dead trees, stumps, and rotting wood from your property
- Store firewood at least 20 feet away from your home and off the ground
- Seal cracks and crevices around your home's foundation and exterior
- Trim tree branches and vegetation that touch your home's exterior
- Replace water-damaged wood and ensure proper ventilation in attics and crawl spaces
Professional Treatment Approach
Greenix's carpenter ant treatment begins with a thorough inspection to locate both parent and satellite colonies. We use targeted application of professional-grade baits and non-repellent insecticides that ants carry back to their colonies, eliminating the entire population including the queen. Our treatment includes identifying and addressing conducive conditions like moisture issues and entry points to prevent future infestations.
Related Pests
Other common ants you might encounter
Fire Ants
Fire ants are small, aggressive red or reddish-brown ants measuring 1/8 to 1/4 inch long. They're known for their painful, burning stings that leave raised, white pustules on the skin. These invasive pests build distinctive dome-shaped mounds in lawns and open areas, with colonies containing up to 250,000 workers.
Sugar Ants (Odorous House Ants)
Sugar ants are small, dark brown to black ants measuring 1/16 to 1/8 inch in length. Often called odorous house ants, they emit a distinctive rotten coconut smell when crushed. These persistent pests are attracted to sweet substances and can quickly establish large colonies with multiple queens inside your home.
Pavement Ants
Pavement ants are small, dark brown to black ants measuring about 1/8 inch in length with distinctive parallel grooves on their heads and thorax. These common household pests get their name from their habit of nesting under pavement, concrete slabs, and along sidewalks. Colonies can contain thousands of workers and multiple queens.
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