Finding a carpenter ant nest in your home can be a stressful experience. These ants are not like other species; they actually excavate wood to create their nests, which can lead to serious structural damage over time. Once you’ve identified a nest, it’s important to take the right steps to address the issue effectively. This includes tracking the ants’ movements, clearing scent trails, treating infested areas, and, if necessary, seeking professional help.
Carpenter ant nests (Camponotus pennsylvanicus) are typically hidden inside walls, ceilings, or other wooden structures within a home. There are two types of nests: the main nest, which houses the queen, and satellite nests that contain workers and larvae. Identifying these nests can be challenging, but there are several signs that indicate an infestation. For example, you might hear faint rustling noises coming from inside the walls. Visually, one of the most common indicators is frass—piles of sawdust-like debris that ants push out as they build tunnels.
To test for hollow spots in wood surfaces where ants may be nesting, you can tap on the wood and listen for a hollow sound. You should also look for ants moving around your home. They often hide in damp areas such as under sinks or around window and door frames. It can be tempting to reach for an ant spray when you spot the insects, but this approach doesn’t solve the problem. Spraying insecticides only affects the ants you see, not the entire colony. In fact, using sprays can make things worse by scattering the ants, causing them to form new nests.
If possible, follow the ants when they are most active at night to identify their entry points and trace them back to their nest. If you find the nest, you can take steps to treat it yourself. One of the easiest ways to get rid of carpenter ants is by drilling ⅛-inch holes in your walls near the nest area and placing boric acid inside each hole. This helps dry out the insects as they pass through. You can also use insecticides specifically designed for carpenter ants, such as the Spectracide Terminate Termite and Carpenter Ant Killer. Place poisoned bait in areas where ants frequently travel so worker ants will carry it back to the colony.
Carpenter ants are attracted to wet and decaying wood, so it’s important to fix any leaks and replace water-damaged materials throughout your home. Wipe down surfaces regularly and store food securely. You can also clean up carpenter ant scent trails using solutions like ammonia or vinegar, which disrupt the ants’ ability to navigate. Keep in mind that the ants you find inside your home could be coming from an outdoor nest in a woodpile or tree stump. Be sure to treat potential outdoor sources as well.
Going forward, consider using cellulose insulation to keep carpenter ants out of your home and prevent future infestations. While these methods can work for smaller nests, carpenter ants are difficult to eliminate completely. If you’re dealing with a major infestation or notice that ants are returning after treatment, it’s best to call pest control professionals. They have specialized tools that can locate and eliminate colonies more effectively. It’s also a good idea to bring in the pros if you suspect there are multiple nests.
