Do I Have Carpenter Ants?

Carpenter ant near the wall of a basement

Ants flying around inside your home may be the reproductive drones of a carpenter ant colony. Look for small, round excavation holes in wooden structures in your basement, crawl space, deck, or porch. Carpenter ants create these holes to discharge the sawdust-like wood shavings they produce while tunneling.

It can be frustratingly difficult to find conclusive signs that you have a carpenter ant problem. The ants tend to tunnel through deep or inaccessible sections of wood. Their tunnels tend to be impossible to spot until they start causing serious problems. By learning more about what ants are all about, however, you can be better at spotting them. This is what you should know about carpenter ants, including how to tell if you have them.

What are carpenter ants?

Carpenter ants (Camponotus spp.) are some of the largest and most common ants in Michigan. They’re also one of the most common home-invading pests in Michigan. Like other ants, carpenters live in large eusocial colonies where different castes perform different roles. Unlike most ants, colonies live inside wooden structures by hollowing them out from the inside. In the wild, they usually nest in decomposing trees, logs, or stumps. They can also tunnel through homes!   

Carpenter ant workers look like sugar ants, but they’re larger and have evenly-rounded thoraxes. Most workers are ¼ to ½” long. Carpenter ant drones are even larger, and they have flight-capable wings. Drones are often confused for termites, but you can tell them apart by looking at their antennae. Carpenter ants have distinctive “elbowed” (curving or “L-shaped”) antennae, whereas termites have straight, beaded antennae. You’ll probably see the ants crawling on or near wooden structures. 

Carpenter ants outside of an entrance to their colony

Why are carpenter ants a problem?

Contrary to popular belief, carpenter ants don’t actually eat wood. Carpenter ants tunnel through wooden structures to build large, complex “galleries” for their colony to live inside. As the colony grows, the ants continue to work their way deeper through the infested wood. In the meantime, the ants will continue to hollow out larger and larger segments of wood. Ant workers reduce the wood they tunnel through to a sawdust-like substance and transport it out of the colony. 

Obviously, hollowing out the inside of a wooden structure compromises its structural integrity. Over time, carpenter ants could seriously damage the wood they infest–and any structures that wood supports! If the ants hollow out enough wood, they could trigger the collapse of load-bearing structures such as support beams. Ant tunnels also tend to make wood more vulnerable to moisture accumulation and mold growth, which could lead to further problems.

Do I have carpenter ants?

The most obvious sign of a carpenter ant infestation is the presence of winged ants inside your home. If there are flying ants inside your home and it’s not mating season, then you probably have an infestation. Workers themselves may venture indoors during summer, but seeing them during winter is a bad sign. Look for workers around any exposed wooden structures, especially in naturally damp or humid parts of the home.

You should also look for small, circular openings on the surface of the wood. These holes are where worker ants expel the sawdust-like shavings they create when tunneling through the wood. If you find shavings or dust accumulating under these openings, your infestation is quite active. Remember: carpenter ants attack moist, humid, or damaged wood. If you’re worried you have an infestation, check wood that fits this description first.

Carpenter ants working on tunnels in wood

What can I do about carpenter ants?

Tunneling through wood dries out carpenter ants very quickly. Workers require a constant source of moisture to re-hydrate if they’re going to remain active. For this reason, the ants almost exclusively target wet or moist wood. If they can re-hydrate while they tunnel, they’ll never have to stop working on their colony. By making sure wood around your home is dry, treated, and protected, you’ll keep ants from preying on it.

First, look for and fix possible plumbing leaks inside and outside. Make sure your outdoor gutters, downspouts, and drains are direct water away from your home effectively. Find places where wood contacts the ground and cover that wood with plastic sheets or barriers. Trim down branches, shrubs, or other “bridges” carpenter ants could use to access your home. Inside, dehumidify your basement, crawl spaces, and other lower levels as well as possible. Replace any damaged or soiled wood ASAP.

 

The faster you find a carpenter ant infestation, the more potential damage you can prevent. Watch for these signs of infestation, but look out for the vulnerabilities that may lead to infestations, as well. Protect wooden structures in your home, keep them dry, and watch for cracks and gaps ants could exploit. 

If you’re worried you have carpenter ants in your home, don’t hesitate to give Griffin Pest Solutions a call. Our experts locate your ants, remove them, identify how they got in, and ensure they won’t get in again. If you see the telltale signs of carpenter ants, just call right away. We’ll make sure your home stays whole.

Carpenter Ants in Michigan

Carpenter Ants in Michigan

Carpenter ants are the undercover saboteurs of the pest world. Disguised as the unassuming pavement or field ant, they infiltrate your home. Quietly, slowly, they establish themselves, building their base of operations. Year after year, their colony grows, until… your home is their home.

…Ok, so it’s not as dramatic as all that, but carpenter ants really are bad news. Despite their propensity to inflict serious damage all over Michigan, carpenter ants are far less well-known than their wood-munching rival, the termite. It’s time that changed. Here’s everything you should know about Michigan’s wood-tunneling terror, and how you can keep it away from your home.

What are carpenter ants?

What are carpenter ants?Carpenter ants (Camponotus spp.) are some of the largest and most common ants in Michigan. Adults have multiple “job” classifications depending on the role they perform for their colony. There are three distinct “castes”: workers, drones, and queens. Generally, ants of each caste range in size from ¼ to ¾ of an inch. They’re usually black, but they can also be dark brown, red, orangish, or dull yellow.

Carpenter ant workers resemble typical “sugar” ants, except they’re larger. Drones are larger than workers and have flight-capable wings.  Drones may be mistaken for termites, because they fly in swarms when mating. Carpenter ant queens are the largest and least numerous caste. It’s possible to distinguish carpenter ants from other species by examining their waists and thoraxes. Carpenter ants only have one “petiole” or waist segment separating their abdomen from their thorax. These thoraxes are evenly rounded and look smooth or uniform.

Why are they a problem?

Carpenter ants build their colony nests by carving tunnels through wood. Workers bore through moist, rotting, or damaged wood to create hollowed-out spaces for colony members to live. Unlike termites, carpenter ants don’t eat the wood they chew through. Instead, they break it down into a sawdust-like substance and transport it out of the tunnel. As carpenter ant colonies grow in size, workers continually expand their colonies’ tunnels through the infested wood.

Over a long enough period, tunnels carved by carpenter ants compromise the structural integrity of infested wood. It may even break, collapse, or fail, sometimes leading to expensive and potentially dangerous damage. Carpenter ant don’t usually do as much damage as termites, but they still pose a threat to wood in your home.

When are they active?

when are carpenter ants active?Carpenter ant workers actively build their nests whenever they’re warm enough to move around. Drones and queens emerge from their nests to swarm and mate during early spring. After mating, carpenter ant queens’ wings break off and they begin building a nest for their eggs. While the queens search for a nest, they are more visible than usual and may be encountered indoors. Don’t panic! That doesn’t necessarily mean they’ve infested your home… yet. If you find several flying drones in your home, however, chances are they came from an indoor nest.

Carpenter ants usually spend winter dormant; they return to their nests and wait for temperatures to warm back up. If they’re nesting in a warm place such as your home, however, several workers may remain active all year. If you encounter carpenter ants indoors during the winter, they are most likely infesting wood in your home.

How do you get them?

Carpenter ants need moisture to survive, and chewing through wood dries them out in a hurry. Consequently, carpenter ants are only attracted to moist wood, or wood that is rotten and softening. Wet wood is easier, faster, and less resource-intensive to tunnel through. It gives way easier, and the colony can remain hydrated while expanding.

Outdoors, the ants primarily nest around rotten tree stumps, dead tree limbs, firewood, old fence posts, or rocks. Indoors, they’ll seek out any wood that’s already been compromised by water or humidity. If you have carpenter ants, it’s probably because some of the wood in or around your house is water-damaged. Plumbing leaks, humidity, drafts, puddling, and poor insulation all promote the environments that make wood appealing to carpenter ants.

How do you prevent them?

How do you prevent carpenter ants?The first thing you should look for when you have carpenter ants is a moisture problem. Make sure you don’t have any plumbing leaks. Check your home’s humidity, especially in your basement, attic, pantry, or crawlspace. Ensure your gutters, downspouts, sump pump, and drainage are all working properly. Look for puddles in your basement. Address any drafts you feel in your home, especially if it’s winter. Consider investing in a dehumidifier for particularly humid parts of the home.

If you happen to find water-damaged wood, dispose of it immediately. The longer carpenter ants infest a structure, the further they’ll spread. It’s possible locate a carpenter ant colony by finding the sawdust-like material they produce after boring through wood. Remove the nest by detaching and disposing of the damaged wood. If damage is extensive, you may want to enlist the help of a professional to avoid hurting surrounding structures.

The most dangerous thing about carpenter ants is their ability to go unnoticed. Now that you know what to look for, you’ve disarmed their most valuable tool. Don’t stop there. Next time you think you might have spotted a carpenter ant, trust your instincts. Track that little wood biter down and flush it out to save yourself a big headache in the future. This is your house!

And remember: if you ever need some back-up in the war against the wood monsters, give Griffin a call anytime. Any win we can snatch away from carpenter ants is a win for us!