Why Flying Ants Show Up in Fall

Flying ants on a blade of grass

Every year around Labor Day, swarms of flying ants begin appearing all over west Michigan in huge droves. For the next couple days, they’re flying around everywhere. You might even remember the infamous “flying ant day” of 2017, when the swarms descended on Detroit. Then, as mysteriously as the ants appear, they seem to vanish without a trace.

What are these winged ants, exactly? Where did they come from? Where do they go after they’re done darting around all over the place? Most importantly, are they going to try to infest your home this fall? Here’s everything you should know about the enigmatic winged ants you’re seeing this September.

What are they?

The flying ants that you’re seeing right now are the reproductive swarmer (or alate) variety of yard ants. Yard ants are related to carpenter ants, but they nest in the ground instead of chewing through wood. Swarmers are around ¼ to ⅜” long, look reddish brown, and have a hump between their heads and thoraxes. They look like normal ants in every way, except that they have wings. Swarmer wings are clear and translucent. They fold behind the ants’ backs when the ants aren’t flying.

There are more than 50 different species of common yard ant native to Michigan. The ant swarms you’re seeing represent many different types of species that all become active this time of year. Different swarms come out at different times, which is why it seems like the swarming doesn’t stop for days. You’ll often notice swarms seem to gather or even collide in midair and then begin moving as a group.

why do flying ants show up in Michigan every fall around Labor day?

Why are they here?

Flying ants exist for one reason: to reproduce. Alates spend most of spring and summer inside their ant colonies, where they’re fed by workers. In late summer and under the right conditions, they fly out of the nest to seek mates. The ants require high temperatures and humidity and clear, sunny weather without much wind to begin swarming. They’re particularly prone to begin their swarming on the first clear day after several days of rain.

Most yard ant species reproduce around late summer because that’s when their ideal swarming conditions happen. Ants also tend to begin reproducing in late summer to prepare for winter. When conditions are just right, many different species’ will begin the mating process all at once. Although late summer reproduction is most common in Michigan, other ant species may swarm at other times of year. Some flying ants swarm in spring, fall, or even mid-summer.

What are they doing?

Flying ant swarms are either actively mating or in the process of seeking out mates. Flying ants mate in midair in a process called “nuptial flight.” On “flying ant day,” unfertilized flying queen ants (sometimes called “princesses”) leave their colonies and begin secreting attraction pheromones. Male and female alates purposely fly away from their nests to help ensure outbreeding. The pheromones secreted by princesses attract nearby male reproductives (sometimes called “drones”).

Princesses actually often fly away from males, forcing them to pursue her in order to mate. The swarms you see are groups of male drones pursuing one of these princesses. Mating itself occurs very quickly and in midair. Male drones die very soon after mating. The fertilized female will fly to the ground and begin making a new nest. Soon after, she will lose her wings and begin laying eggs. The first of these eggs will hatch into workers, who will lay the foundations for a new colony.

are flying ants dangerous?

Are they dangerous?

No. Swarms only have mating on their mind. They won’t bite, sting, or attack you. Swarming ants aren’t aggressive, territorial, or defensive in any way. Even if swarms appear to be flying right at you, it’s only because they’re pursuing a princess. Swarms are more-or-less totally uninterested in people, though they may congregate on human structures. Swarmers may also accidentally flutter into buildings through openings like cracks and crevices.

Yard ants can’t make their nests indoors. To form a nest, a fertilized queen must dig into soil. Queens may build their nests near your home, however. Often, ants build their colony sites near human structures because of the natural cover they provide. Queens are particularly vulnerable when they start building nests, so they may seek cover and darkness near your home. When yard ants establish colonies near you, you may encounter their foraging workers inside your home. These workers aren’t dangerous, either, but they could be annoying.

Despite how frightening it can seem, swarming season is nothing to worry about. Flying ants aren’t dangerous, and they’ll die off and disappear very soon. If you’re very bothered by ant swarms this year, we recommend staying inside whenever possible while swarms are active. Luckily, you won’t have to wait long until they pass.

Swarms may be more-or-less unavoidable, but that doesn’t mean ant infestations must be. If you have an ant problem in your home, give Griffin a call any time. We’ll find out why you have ants, where they’re coming from, and how to stop them.

Carpenter Ants Come Marching In This Spring

The carpenter ants come marching in this spring

Carpenter ants get away with a lot, even for a pest. Whereas the termite inspires fear and indignation, most of the public doesn’t even consider the insidious carpenter ant. If someone had a termite infestation, they’d no doubt want it handled right away. Yet, despite the fact that carpenter ants destroy wood too, many infestations go unrecognized, much less treated!

We will not have it. We’ve warned you about the carpenter ant before, but now that spring is springing (kinda), the threat is real. This spring, thousands of carpenter ants are marching on your castle, and it’s up to you to stop them. That’s why we’ve put together this anti-invasion battle plan. Here’s everything you need to know to rout the rascally ruffians ready to rampage through your residency this spring.

What are they?

what are carpenter ants?Carpenter ants look like their sugar or pavement ant cousins, except bigger and darker. They’re typically brown or black and about ½ an inch long, though they could be red-and-black and even larger. Like most ants, carpenter ants are eusocial and live in a colony where members have specialized roles and characteristics. Unlike most ants, carpenter ants build their colonies by burrowing into moist wooden structures. Carpenter ant colonies could eventually inflict significant enough damage to compromise the structural integrity of the wood they inhabit.

There are three castes of carpenter ant: workers, drones, and queens. Worker carpenter ants build and expand the colony by cutting into and excavating wood to make “galleries” through it. Drones and queens are larger than workers, and have functional wings during mating season. Queens lay eggs to populate their colonies, and swarmers leave the colony to form new satellite colonies. Drones and queens only swarm in mating season, which typically occurs in early spring.

Why are they here?

why are carpenter ants here?Carpenter ants re-emerge from winter dormancy to replenish their energy and mate. Drones and queens emerge first in late winter or early spring. The more numerous drones swarm in large groups while seeking queens during mating season. You may notice these swarms around your home as early as mid-March. After mating, carpenter ant queens look for likely places to establish new nests. If they find a good place inside your home, they’ll lay 15-20 fertilized eggs there. These eggs will hatch into workers, which will begin to build a new colony.

Finding carpenter ants indoors doesn’t automatically mean you have an infestation. Sometimes queens or swarmers make their way indoors automatically, without intending to establish a nest there. Pay attention to how early you find carpenter ants indoors, as well as what caste those ants belong to. If you find numerous swarmers that seem to be trapped inside your home, it’s probably because they emerged from an indoor nest.

What do they want?

carpenter ants bore through woodUnlike many varieties of ant, carpenter ants are not primarily motivated to infest homes by the food inside. Carpenter ants feed on protein and sugar, primarily by foraging for aphids, live and dead insects, and honeydew. Contrary to popular belief, carpenter ants do not eat wood; they simply excavate it to build their colonies. Instead of food, carpenter ants are primarily motivated by moisture. They need water to survive, just like everything else, and excavating wood is thirsty work.

Carpenter ants tend to seek out and infest moist, wet, or decaying wood. Building into wet wood allows worker ants to stay hydrated while they work. It’s also easier to break down and transport wood when it’s already wet and piliable. Rotten wood is especially easy to burrow through, making it a favorite of carpenter ants. Queens tend to build nests into existing wood damage, as it provides shelter for eggs and a convenient starting point for newly-hatched workers.

How can I keep them out?

how can you keep carpenter ants out of your home?Preventing carpenter ants is all about wood management. Start in your yard. Look for any wood carpenter ants could conceivably build into. Remove stumps, dying bushes and shrubs, dead bark, and any other rotting wood. Keep firewood elevated off the ground or store it indoors. Walk the perimeter of your home looking removing and replacing rotting or cracked siding. Cover wood that directly contacts soil with hard plastic covers.

Inside, focus on moisture control. Identify and repair any plumbing leaks, especially if they could be leaking onto wooden structures. Monitor indoor humidity levels, particularly in at-risk areas like the basement, attic, or crawl spaces. Check for drafts around walls, doors, and windows. Make sure windows and pipes don’t “sweat” during particularly humid or cool days. Finally, replace any damaged wooden furniture or structures, especially if they’re showing signs of internal rot. If your basement is quite humid, consider moving any wooden items upstairs until you can install a dehumidifier.

 

You could probably use a little good news after all this bad news. We’ve got some… kind of: compared to termites, carpenter ants work slowly. The first year they establish a nest, the colony grows slowly and the damage it inflicts is minimal. After a year, however, the colony keeps growing at a consistently faster pace.

Obviously, that means it’s very important to find and snuff out carpenter ant infestations quickly. Luckily, you don’t have to do that alone. Your kingdom always has an ally in Griffin Pest Control. Give us a call with your carpenter ant problem anytime. We’re always ready to answer the call to arms.

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!