What Do Rodents Want This Fall?

Rodent near a pumpkin. What do rodents want this fall?

Autumn is a lovely time of year. The overbearing heat of the Midwest summer leaves us alone as the temperatures start to shift. Leaves change color, pumpkin spice becomes the flavor du jour, and everyone starts wearing socks again. In the middle of these positive changes comes one not-so-positive change, however. Rodents start finding their way inside homes and businesses. 

Just like you pull sweaters out of storage as the temps turn, rodents start looking for similar, reliable warmth. If you’re not careful, they’ll find it in your home. This is what attracts rodents to your home this fall, how they get inside, and how to keep them out.

What attracts rodents in fall?

The simplest answer is food and warmth. Cooling temperatures trigger a response in rodents and mice to seek out warmth and shelter. Rodents are extremely sensitive to temperature and pressure fluctuations, so they may sense the changing season before you do! 

When rodents sense cooling air temperatures, they also start fattening themselves up. They’ll seek out high sugar and fat foods, and in larger quantities than usual. Both rats and mice have an exceptional sense of smell. They can smell all the food they want while its inside your home–often while it’s still in its packaging! If they smell the food they want in your home, they’ll try to get it. Fall is a time of survival for rodents. Any place that provides them the things they need to last the winter is a target.

How do rodents get inside during fall?

Rodents are clever creatures. They’re capable of fitting into breaches as small as a quarter. If rodents get into your home, they found one of these breaches. The pests commonly enter homes via crumbling foundation, broken screens, vents, attic insulation, window and door frames, and pipes. You should see all areas that you need to monitor regularly. 

Monitoring entry points doesn’t take much work. We recommend simply conducting a weekly or bi-weekly inspection of your home. Check for any damage such as torn screens, gaps between utility lines, or torn insulation. By minimizing potential entry points, you’ll significantly you significantly lessen your chance of any infestation, including rodents.

How can I keep them out?

Not letting them in in the first place is the first step. After that, you want to be cognizant of the things that draw pests like rodents. They’re not just looking for shelter, they’re looking for food and water as well. Clean and well-maintained garbage cans are less likely to draw pests than dirty ones filled with food waste. 

Fix dripping or leaking pipes immediately so they don’t have a chance to create pest-adored standing water. Maintain your landscape to avoid giving rodents hiding places they can use to approach your home. If they have cover to hide in close to the perimeter of your home, they’re more likely to take the jump indoors. 

 

If you suspect you have a rat or rodent problem, get in touch with Griffin Pest Solutions immediately. Our integrated approach to pest management will draw unwelcome visitors out and keep them from returning. That way you can get back to enjoying the fall properly: in flannel, pumpkin spice latte in hand.

How Did I Get Mice?

Mouse peeking out of a small mouse hole in a home's wall next to an electric outlet

Mice can squeeze through any gap that’s at least ¼ of an inch wide–about the size of a dime! They find these gaps by following the smell of food or feeling of air pressure differentials created by drafts. Mice are very adept climbers, so they can reach gaps anywhere around your home.

After using tiny gaps to sneak inside, mice can reproduce all year as long as they have food. Mice had to sneak in originally, but many of the mice you find in your home were likely born there. The best way to keep mice out of your home for good is to seal off their access points. These are the four most common ways mice get inside homes and how you can mouseproof them.

Frames

Believe it or not, door and window frames are probably the access points mice use most. Wooden frames naturally warp and bend over time, creating small gaps between the window or door and the frame. Likewise, the weatherproofing wears down or unpeals. Eventually, tiny gaps appear between the door or window and frame or the walls and the frame. These gaps may not be large enough to see, but they’re large enough for mice to use.

Conduct a quick maintenance inspection on each of your door and window frames every spring and fall. Replace any weatherproofing that looks worn down or damaged. Check to make sure the doors and windows sit in the frame properly and don’t feel too tense or loose. Patch up any cracks or gaps you find around the wood itself using caulk. If you can feel a draft, it means your frame isn’t as secure as it should be. Find the gap sucking hot air out and patch it up.

Utility Lines

Utility lines are the pipes, wires, and vents bringing gas, electricity, heat, and plumbing into your home. All homes need to have small gaps in their walls to allow these utility lines inside. The problem is, mice can find these gaps by following the utility lines. They’ll sense heat given off by ventilation or hot water and follow that heat through the wall. Gaps between walls and utility lines may expand over time, making the gap an even more attractive access point.

Starting outside, walk the perimeter of your home looking for each area where a utility line enters the building. Look near your HVAC, your power meter, your sump pump, your light fixtures, and your outdoor faucets. If you see a visible gap between these pipes or wires and the wall, patch that gap with caulk. When you’re done outside, go inside and do the same thing. Replace these caulk barriers around once a season to make sure they don’t wear away.

A small gap between a basement's wall and its concrete floor. Mice often sneak through the space gaps like these create.

Subterranean Gaps

Over time, cracks and gaps may open up around the foundation, siding, or the baseboarding of your home. These could occur because of weather damage, wood rot, or natural wear-and-tear. However they happen, small gaps and cracks around your home’s foundation start to create drafts. These kinds of drafts are particularly common in unfinished basements. Mice are very sensitive to temperature and pressure differentials. When they sense the hot air shooting out of gaps in a home, they’ll follow it inside.

Start in your basement or lowest level this time. Look for cracks and gaps in the floor and ceiling. Pay particular attention to corners, windows, baseboard, and frames. Seal any gaps you can find with silicone caulk or steel wool. Remember: if a crack or gap is big enough to see, it’s probably big enough for mice to use. Just like before, when you’re done inside you should look for cracks and gaps outside, too.

Roofing

Mice are surprisingly adept climbers. Most mice are capable of climbing most homes without much difficulty by finding downspouts, wires, or other holds. Mice can also access rooftops by climbing up nearby trees or bushes and crawling along overhanging branches. Unfortunately, the fact that mice can climb so well means no access point is safe. Mice don’t just sneak inside from the ground; they could be sneaking in from the roof, too!

Even worse, roofs tend to have all kinds of neglected access points. Mice can exploit rotting shingles, ventilation outlets that aren’t covered, chimneys, cracked gutters, and more. If you have roofing damage, mice will likely use that damage as a means of entering your home. You should have your roof inspected at least once every few years. Check for cracked shingles, rot, and other possible damage. You should also always block your vents and chimneys with mesh.

 

The best way to prevent mouse infestations is to continuously monitor and block off access points. Check each of the most vulnerable areas every spring and fall to make sure you’re still covered. If you stay on top of your access point maintenance, you’ll keep mice from infesting your home for good.

If you already have a mouse infestation inside your home, even blocking off access points won’t help right away. Instead, you’ll have to call the pros at Griffin Pest Solutions. We can drive out mice and make sure they can’t get in again. Mouse season is starting right now, so if you think you have a problem, get in touch right away! We’ll help make sure you have a rodent-free fall. 

Winter Invaders to Watch Out For

Mouse in snow

You could call this time of year in Michigan “the dead of winter.” It certainly often feels that way, especially on one of its many dark, dreary days. Despite how it may look and feel outside, however, not everything really is dead. As you probably know, pests are nothing if not tenacious.

No matter how cold or dead the winter, pests will muddle on long enough to bother you. It would almost be inspirational, if it weren’t so annoying. Here are four pests that are probably trying to warm themselves up inside your home right now.

stink bugs

Stink Bugs

Stink bugs are infuriatingly common in Michigan. Part of the reason why they’ve managed to stick around is that they’re good at staying warm during winter. They do that by sneaking into people’s homes for shelter starting in early fall. Stink bugs congregate around windows and other warm places all fall. While they’re gathered, they find cracks and gaps around frames and siding. They use these gaps to work their way inside.

Inside, stink bugs enter a hibernation-like state called diapause for extended periods of time. While in diapause, the bugs remain completely immobile and don’t need food or water. In order to remain safe while in diapause, the bugs seek out hiding places. The stink bugs in your home may be in your walls, around your rafters, or in other secluded areas. They won’t hurt your home while they’re around, but they may produce their distinctive stink.

cluster flies

Cluster Flies

Cluster flies look a lot like common house flies, but they’re bigger, rounder, and slower. They may make a buzzing noise when they fly around. The name “cluster flies” refers to the flies’ tendency to cluster together in large numbers. Starting in late summer and early fall, they gather in groups to stay warm. As the temperature drops, they make their way into cracks and gaps around siding and awnings. Eventually, these cracks may lead them all the way inside.

Like stink bugs, cluster flies may enter prolonged periods of diapause after entering your home. These flies usually enter your home from high up, so they’re common in attics and rafters. You may find them around window or door frames, or near vents and utility lines. Cluster flies wake up during warm days to move around. They can’t hurt you or damage your property, though they may attract other pests like spiders. Cluster flies usually leave your home in spring.

rodents

Rodents

Rats and mice cannot hibernate. To survive winter, they need to find a warm place where they can access food and water. Rodents are very sensitive to temperature and pressure changes in the atmosphere. They begin infiltrating homes as soon as they sense fall approaching. Rats and mice squeeze through small gaps around window and door frames, utility lines, foundation, and siding. They find these gaps by using their acute senses to find drafts and follow the smell of food.

Rodents can’t fly like stink bugs or flies, so they usually end up in your basement. They’re attracted to any source of moisture or food. Rats and mice grind their teeth by chewing on a wide variety of soft materials. They can ruin boxes and fabric, damage furniture, or even cut electrical wires and start fires. Both rats and mice may reproduce indoors if given the chance. If you have a rodent infestation, you should deal with it fast!

boxelder bugs

Boxelder Bugs

Boxelder bug behavior is quite similar to stink bugs’. Starting in fall, they begin to gather around warm places. They’re particularly attracted to homes with southern and eastern exposure, for the sunlight. As they congregate, they may naturally slip into gaps and cracks around windows and doors. When winter comes, they will move further through the cracks to stay warm, eventually ending up inside. Boxelder bugs have very flat bodies that enable them to squeeze through tiny areas.

Boxelder bugs remain generally inactive during winter. They don’t reproduce inside and they won’t live long enough to survive winter. Boxelder bugs may emerge from their hiding places to sun themselves during warm days. When that happens, you may find them near windows or other warm areas. Boxelder bugs aren’t dangerous, but they may secrete a liquid that could stain surfaces when threatened or crushed. You may encounter more boxelders in early spring, as they begin to leave your home.

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The reason why pests want to get inside your home over winter is so they can stay warm. The colder (and longer) the winter, the more desperate these four pests become. Believe it or not, however, you can turn that to your advantage.

Pests don’t have time to waste trying to break into a fortress this winter. If you can pestproof your place, you can keep pests away all season long. We want to help. If you have a pest problem this winter, give Griffin a call any time. We’re always happy to drive pests out of your home, no matter the time of year!

Pest Horror Stories of Michigan

Fishing Spider

It’s Halloween, and we’re Michigan’s pest control company. You know what that means. Last year, we explored some of the most frightening, upsetting, and down-right ghoulish pests in Michigan. But that’s not spooky enough for this year! After all, who knows if you’ll even ever run into any of those pests. No, this year we wanted to focus on something a little closer to home.

These are four of the most horrifying, sickening, and spooky pest stories ever encountered in Michigan. The type of stuff that makes even our blood, with all its pest-crusading experience, run cold. Oh, and they all happened in the last eight years. Some of them are still happening. Happy Halloween!
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Pizza-loving Rats Overrun Redford

Just this April, residents of the Redford township had to deal with a rather specific problem: pizza-loving rats. According to the news report, a veritable rat plague descended on the Detroit suburbs. The townwide infestation grew so out of control that rats seriously damaged people’s homes. And the source of the problem? A nearby Little Caesar’s dumpster that was too small. Security footage revealed the poorly-maintained dumpster had become a rather popular hotspot for furry pizza fans.

At its worst, people actually saw large rats carrying off pizza down the streets in broad daylight! One resident said he saw swarms of rats scatter whenever he started his car in the morning. Apparently, the problem was not new; one resident had a picture of a squirrel eating pizza from 2010! The longer the problem went unaddressed, the worse it became. This rather unappetizing story just goes to show you how pest problems never stay contained. The longer they go on, the more people they’ll affect–until they’re the scourge of an entire town!
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Bed bugs shut down the mail

Bed bugs Shut Down the Mail

Neither rain, nor sleet, nor hail… but they didn’t account for bed bugs. Detroit has a history of bed bug problems. There were 605 reported bed bug infestations in Michigan’s largest city in 2017. This frightful number gave Detroit the dubious distinction of being the #3 most-infested city in the country. Believe it or not, however, the problem isn’t actually as bad as it has been. Back in 2010 (we know, not long enough ago), Detroit had a bed bug problem of literally disastrous proportions.

So just how disastrous is disastrous? Well, in 2010 entire business buildings had to be evacuated because of how infested they were. If that’s not bad enough for you? How about this: Detroit’s mail service stopped delivering mail to parts of the community. Mail carriers feared the bugs were actually sneaking into the mail in infested buildings and spreading via mail delivery. The fear is warranted: bed bugs love spreading by hitchhiking on unwitting travelers. It’s part of why they’re such a huge issue in major urban centers today.
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Michigan’s Monster Spider

In June 2018, workers on a boat in Elkhart (near the Michigan border) discovered their vessel had a stowaway. A… rather large stowaway. Specifically, they found a fishing spider of unusual size. It was six inches long. It was… six inches long. For reference: US dollar bills are about six inches long. An iPhone is only about five inches long. Spiders should not be six inches long. And it was on a boat.

Luckily (for these boating workers, and all of us, really) fishing spiders are harmless. They also don’t usually get that big… though, obviously, it does happen. Fishing spiders live near water so they hunt waterborne insects and sometimes even small fish. We’re… guessing that six-inch spider caught some fish. Fishing spiders catch this prey by feeling for ripples the prey makes along the water. When they sense these ripples, they race across the surface of the water to catch up to their target. Ok, that’s enough. We’re moving away from fishing spiders now. And water. Forever.
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Flying ants take over Michigan

Flying Ants Take Over Michigan in a Day

No, that heading is somehow not hyperbole. It just happened, in fact: we wrote about it just last month. For one day, around labor day, flying ants suddenly appear in overwhelming numbers. The frightening flying members of Formcicidae family darken windows, cover cars, and menace unsuspecting pedestrians. It happens like clockwork at almost exactly the same time every year, and with nearly the same ferocity. Even more bizarre, the ants tend to vanish just as quickly as they appeared.

Of course, as with everything else in nature, there’s an explanation. In this case, the explanation is breeding (nature has… patterns). Flying ants are the reproductive caste of ant colonies. They swarm so they can seek mates and spread out to form new colonies. Around labor day happens to be the time of year when many ants happen to swarm at once. It also always happens on a clear, sunny day when it’s not too windy. The ants seem to disappear because, for the most part, they die! Flying ants basically only live to reproduce. Again, patterns in nature.

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Did you notice any other patterns in these stories? Other than the fact that they all made your skin crawl, we mean. No matter how horrifying or inexplicable the pest story may seem, there’s always an explanation. That’s how pest infestations work: there’s always a reason they happen, and there’s always a way to stop them.

If you need help stopping a pest infestation, give Griffin a call. Our experts are ready to exorcize even the most horrifying, incomprehensible, evil pest infestations. Yes, even if they somehow involve giant fishing spiders. We’ll do it! Just… try not to get giant fishing spiders. For us.

The Pests in Your Basement this Fall

Seal openings in your home to keep pests out.

Fall is prime pest season. All kinds of pests know winter is coming, and they’re scrambling to sneak into a warm place. Basements are a pest’s favorite hiding place. They’re dark, damp, temperature-controlled, and secluded. You’ll deal with more pests in fall than you do during other seasons. You’ll find more pests in your basement than you will in the rest of your home. You… probably see where this is going.

It’s unavoidable: all kinds of pests are going to try to get into your basement this fall. They’ll sneak, squeeze, and scramble in from any tiny opening they get as if their lives depend on it. Just because you can’t stop them from trying doesn’t mean you have to let them succeed, however. If you take action now, even the most audacious autumn pests won’t be able to bug you this fall. Here’s what you’re up against, and how to come out on top.

Silverfish

Silverfish are small, wingless insects with silver-grey, segmented bodies and bristled tails. They require highly humid environments to survive, so they’re a common basement-dweller all year long. During fall, they’re particularly attracted to your basement as a source of warmth. Silverfish prefer environments that are 70 to 80℉. They feed on starchy materials like wood, paper, glue, and linen. The silverfish in your basement probably huddle beneath a food source in a particularly damp, warm area.

If silverfish can’t access moisture, they’ll dry out and die. Try to figure out where the high humidity in your basement comes from. Look for drafts coming from windows, door frames, hatches, or vents. Make sure your sump pump works properly and doesn’t leak. While you’re at it, look for plumbing leaks and other sources of stray humidity, too. Controlling humidity won’t just help with silverfish; it’ll help repeal all kinds of other pests, too. Pests like…

cockroaches in your basement this fall

Roaches

Like silverfish, roaches are very attracted to humidity. They’ll often seek out kitchens, bathrooms, or basements in order to access the moisture they need to survive. The most problematic roach in Michigan–the German cockroach–also highly prefers warm temperatures. Like rodents (we’ll get to them), they’re very good at following the warmth back to its source. Once inside, roaches tend to hide near food sources during the day and come out to forage at night.

Unlike silverfish, roaches don’t stick to one area in your basement. Instead, they’ll migrate throughout your home. Since they’ll go anywhere, you’ll have to check everywhere. Look for plumbing leaks under sinks, against basement walls, and near utility lines. Roaches love hiding near leaks and food, so depriving them of cover helps, too. Elevate boxes and other storage materials and keep them in dedicated, organized spaces. The clearer and cleaner the floor, the fewer places roaches will have to hide.

Spiders

Michigan’s many spider species have similar habits: they follow the food. The best way for spiders to feed in fall is by following their prey into overwintering locations. Whether you have orb-weaving or hunting spiders, chances are they’re in your home chasing prey. Michigan’s spiders can’t survive winter without taking drastic steps, so infiltrating your home kills two birds with one stone. Spiders are highly proficient climbers, so they can find access points from any angle or elevation.

Spiders generally build their nests near bug “highways” in your home, where they’re most likely to catch prey. In fact, by tracking down webs you can track down these “bug highways” and do something about them. Look for access points such as small cracks and crevices near the cobwebs in your home. Patching these gaps denies pests a way in and spiders a food source at the same time. Keeping your basement clean and cobweb-free will help disrupt spider hunting, too.

mice and rats in your basement this fall

Rodents

Rats and mice are the fall pest to watch for. Rodents are extremely attuned to changes in temperature and air pressure. As soon as they feel summer temperatures changing, they start preparing for winter. They have to: rodents and mice need to spend winter in warm places in order to survive. As such, rats and mice spend pretty much all fall looking for ways into warm structures. Unfortunately, they’re… very good at it.

Rodents can actually track warm drafts or food smells around a home’s perimeter until they find small openings. Rodents primarily find openings near utility lines, window and door frames, and vents. Check around these areas and seal them off with caulk or steel wool as necessary. Replace old weatherstripping and worn vent covers. Finally, vacuum, mop, and sweep your home diligently all fall and winter. It’s difficult to keep rodents from smelling your food, but you can keep them from getting it.

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Even in the midst of pest season, it’s important to remember: keeping your basement pest-free* is never impossible. It might seem like there’s “always another way in,” but there’s not. If you keep following pest control tips like these, you can make your basement a pest-free* zone.

If you ever need help removing your current pests or keeping future ones out, give Griffin a call. We’ll help make sure you can enjoy your fall to the fullest–without worrying about pests in your basement.

The Late Summer Rat Problem

Outside rats move inside when temperatures fall

We don’t like it any more than you do, but it’s time to face facts: summer is ending. Fall will be here before we know it, whether we’re ready or not. If you pay attention, you’ll notice the whole world preparing. Squirrels are busy gathering food, ants are reproducing, and bees are swarming.

Unfortunately, some of these fall preparations might be a problem for you. Rodents like mice and rats are gearing up for fall and winter like everything else. The first item on any rat’s fall preparation list is finding a warm place to stay. If you’re not careful, that place could be your home. The only way to keep rats out this late summer is to beat them at their own preparation game. Here’s what those rascally rodents are up to and how to counter them at every turn:

Looking for Food

Rodents have an incredibly keen sense of smell. Rats can interpret all kinds of information from different scents. This sense of smell helps guide rodents toward accessible food supplies. Rats can smell food through walls, even if it’s dry and stored. They can even smell how easily they’ll be able to access it. Rats literally follow their noses to sources of food, letting scents guide them to vulnerable access points.

Rats are looking for consistent sources of food they can access easily. They want to be able to sneak into boxes of food to chow down without anyone noticing. Make that as hard as possible. Store all your dry goods in airtight plastic containers. Clean up your dining and kitchen areas after every meal. Take your garbage out every night. If you can make your food hard for rats to get at, they’ll be much less interested in trying.

Rats start building nests in late summer and fall

Building Nests

Rodents aren’t picky about nesting material. They build small, tightly-packed clumps of various debris, which they rest and eat in. Rats build their nests of paper, insulation, stray fabric, and other trash. They gather these materials by dragging them into dark corners. Often, rats will rip paper or other objects to shreds to use as nesting material. Rodents also rear their young inside these nests, where they can stay safe and hidden.

Rats build their nests in dark, secluded, and warm areas. They want to be able to rest and forage for food without fear of being spotted. Consequently, if there’s a rat nest in your home, it’s probably in your basement, attic, or crawl space. Look for nests in corners or beneath furniture. Rats often build nests into damaged insulation, walls, or other nooks and crannies. Prevent rats from building nests by taking care to keep your basement clean and tidy.

Teething

Rat and mouse teeth never stop growing, so the rodents never stop teething. Rats and mice have to gnaw on something constantly to keep their teeth sharp and healthy. They’re not particularly picky about what they chew on. As long as it’s soft enough to bite down on safely, rats are all over it. Teething is a big reason why rats can be dangerous inside homes. When rats bite down on wiring, they could start dangerous electrical fires.

Rats gnaw on soft materials that they can access while they’re sneaking around. Usually, they’re chewing on boxes, storage materials, fabrics, or wiring. The best way to keep rats from damaging your stuff by chewing on it is to elevate it. Keep vulnerable stored materials in an elevated place where rats can’t reach it. Replace your cardboard boxes with hard plastic ones. Conceal and protect electrical wiring whenever possible, and consider affixing it to the wall.

Rats sneak into homes to find shelter in late summer and fall

Looking for Shelter

Rats have extremely keen perceptive senses developed over centuries of hard-won survival. One of the main reasons why they have these developed senses is so they can prepare for environmental changes early. When they start sensing a season’s change, they start looking for warm shelter right away. Rats use several senses to start searching for shelter. Their whiskers help them locate drafts and warm breezes, which they can follow into structures.

Rats use their heightened senses to find all kinds of access points. Once they find these access points, they can twist and squeeze their way in through surprisingly tiny openings. Rodents frequently squeeze through openings in door and window frames, utility lines, and small foundation cracks. Many rodents can climb surprisingly well to access openings, but most get in via access points close to the ground. Finding and blocking off these access points is the most important thing you can do to prevent rodent infestations.

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Rodents are very, very good at preparing for cold weather. One of their most dastardly techniques is sneaking their way inside before we know to look for them. If they’re safely ensconced in your home before the temperatures even drop, they won’t have to worry about your fall defenses!

If rodents start this early, we have to start preventing them this year, too. Follow these tips starting now to keep rodents from infesting your home this fall. It’s not too early to start thinking about winter! If you do end up with rodents now or later, however, remember that you can always give Griffin a call. No matter how prepared your rodents are, we’ll prove we’re even more prepared.