Skunk Under the Shed? Why Summer Is Peak ‘Something Smells Wrong‘ Season

It’s two in the morning. You let the dog out for one last trip to the yard. Then you hear frantic barking, followed by a smell that hits you like a wall. Your dog comes sprinting back to the door, and you already know exactly what happened. Summer is peak skunk season in London, and if this sounds familiar, there’s a good chance one has made a home under your shed or deck. In this blog, Skedaddle Humane Wildlife Control in London explains why summer brings so much skunk activity to backyards and what our team does to deal with it safely.

Summer is peak “something smells wrong” season for a few clear reasons. Warm nights bring them out to forage. Watered lawns push grubs to the surface and turn your yard into a food source. The cool, dark space under your shed is the perfect spot to raise young. And a whole family living under your deck creates a smell that seeps into your home through open windows and air conditioning units. It’s not just one passing visitor, it’s an active den right in your backyard.

You should never try to deal with this on your own. Approaching or startling one of these animals is the fastest way to end up with a very bad night. Our team at Skedaddle handles the whole process humanely and safely so you don’t have to go anywhere near it.

Do Skunks Nest Under Sheds?

Yes! Sheds, decks, and porches are some of their favourite denning spots, especially in summer. The space underneath these structures is cool, dark, sheltered from rain, and hidden from people and other animals. It’s exactly the kind of spot they look for when raising their young.

They don’t need a large opening to get in. A gap of just a few inches at the base of a shed or deck is enough for them to squeeze through and start digging. Once they’ve settled in, they stay — and the longer they’re there, the harder the smell becomes to ignore.

A den under your shed in summer almost always means young kits are present. Females choose these spots specifically because they feel safe and protected. That family won’t leave on its own just because you’d like it to, which is why our professional help is the right call from the start.

Midnight Confrontations

The most common way people find out they have a skunk under their shed is the hard way – a late-night dog encounter. These animals are nocturnal, which means they do most of their moving around after dark. Your dog, who has no idea what’s under the shed, runs out into the yard and finds out the hard way that something has moved in.

The spray they use for defence is an oily, sulphur-based liquid that sticks to fur, skin, and fabric. It doesn’t wash out easily, and the smell can linger for days or even weeks if not treated properly. A direct hit on a dog can also cause temporary eye irritation and distress.

The real problem isn’t just the spray — it’s what the encounter tells you. If your dog has come face to face with one in your own backyard, there is almost certainly a den nearby. That den doesn’t go away on its own, and the late-night run-ins will keep happening until the situation is professionally addressed.

The Under-Shed Den

During the hot months of summer, these animals look for cool, shaded, protected spaces to rest during the day and raise their young. The hollow space under your shed or deck fits all of those needs perfectly. They scratch away a few inches of soil, squeeze under the structure, and set up a den that can house a whole family.

Summer is when the young kits are growing and becoming more active. A mother with a litter under your shed isn’t going to leave voluntarily, she chose that spot because it felt safe, and she’ll defend it if she feels threatened. The longer the family stays, the more waste and odour builds up in the space beneath your feet.

Here is what makes the space under your shed so attractive to them:

• Cool and Shaded During Hot Weather: The space under a shed or deck stays much cooler than open ground in summer heat. These animals are sensitive to heat and actively seek out shaded spots to spend the daytime hours. Your shed gives them exactly that, along with protection from rain and wind.
• Hidden from People and Other Threats: The enclosed, dark space under a structure feels secure to a nesting animal. They can come and go at night without being easily seen, and the structure above them provides shelter on all sides. This sense of security is exactly what a mother looks for when choosing a place to raise young.
• Easy to Dig Into: The soil around the base of a shed or deck is often softer and looser than open ground, which makes it easy for them to dig their way in. Even a small gap at the base of a structure is enough of a starting point. Once they’ve dug in and established the den, they are very unlikely to leave without help.

The Over-Watered Buffet

Your green, well-watered summer lawn is one of the biggest things drawing them to your yard. When you water your lawn regularly, the moisture softens the soil and pushes grubs and beetle larvae up toward the surface. To a foraging skunk, your lawn is an all-you-can-eat buffet that gets restocked every time you run the sprinklers.

The digging they do to get at grubs leaves small, cone-shaped holes scattered across your lawn. If you’ve noticed these holes appearing overnight, it’s a strong sign that one or more are actively feeding in your yard. The holes themselves are a nuisance, but they’re also a signal that the activity is happening close to your home.

Here is how your yard becomes a food source that draws them in:

• Soft, Watered Soil Brings Grubs to the Surface: Grubs live just below the surface of your lawn and move closer to the top when the soil is moist. Regular watering, especially in the evening, creates ideal conditions for grubs to be easy to find and dig up. This is why heavily watered lawns see more digging activity than drier ones.
• Circular Digging Holes Across the Grass: The holes they leave when digging for grubs are small and round, usually just a few centimetres across. Finding several of these scattered across your yard overnight is one of the clearest signs they are actively foraging on your property. The more holes you see, the more active the feeding is.
• Evening Watering Increases Night-Time Activity: Watering your lawn in the evening softens the soil right at the time these animals are most active. This combination of soft soil and nighttime foraging creates perfect conditions for increased activity in your yard. Switching to morning watering can reduce the appeal of your lawn as a feeding ground, though it won’t solve an existing den problem on its own.

The Maternity Ward Aroma

A skunk passing through your yard leaves a smell that fades after a little while. A whole family living under your shed is a different story — the odour builds up day after day because they are right there, all the time. Summer is when the young kits grow fast and start moving around more, which means more activity, more musk, and a smell that gets stronger as the weeks go on. If you’re noticing a persistent odour around your shed or deck that keeps coming back, a family is almost certainly denning underneath.

Here is how the smell from a den finds its way into your home:

• Musk Buildup in the Soil and Enclosed Space: The natural musk these animals produce, separate from a direct spray, soaks into the soil and the enclosed space under your structure over time. The longer the family stays, the more it builds up and the harder it becomes to get rid of. This kind of deep, settled odour in the soil doesn’t clear up on its own once the animals leave — the area needs to be professionally cleaned and treated before the smell goes away for good.
• Odour Seeping Through Your Home’s Openings: That built-up smell doesn’t stay under the shed. It works its way into your home through air conditioning units, open basement windows, and gaps in your floor, especially on hot days when the air under the structure gets warmer and pushes the smell upward. Many homeowners notice the odour inside the house before they even realize where it’s coming from.
• The Smell that Won’t Go Away Without Professional Help: A persistent musky smell around your deck or shed that keeps coming back no matter what is a clear sign that the source is active and close by. The odour won’t stop until the family has been humanely excluded and the den area has been properly cleaned by our team. Covering it up or waiting it out doesn’t work – the smell comes right back as long as the den is still active underneath.

Skunk Removal and Prevention in London

When our team arrives at your property, the first thing we do is a full inspection. We assess where the den is located, how the animals are getting under the structure, and whether young kits are present. That information shapes everything that comes next — including the timing of the exclusion to make sure no young are left behind.

Our exclusion process uses one-way door systems at the active entry points. These allow the animals to leave the den on their own but prevent them from getting back in. Once the den has been vacated, we seal every entry point by installing heavy-duty galvanized steel mesh around the base of the structure. The mesh is buried deep enough that they cannot dig under it to get back in.

All cleanup of the den area and any contaminated soil is handled by our team professionally. Homeowners should never go into the space under a shed or deck where a den has been active – the waste they leave behind carries health risks and the lingering odour requires proper treatment. Our team takes care of all of it from start to finish.

Skunk Challenges in London, Ontario

London’s mix of established residential neighbourhoods, mature trees, and green spaces creates ideal conditions for skunks year-round. Summer is by far the most active season, with peak denning activity happening from late spring through August when females are raising their young.

Many London homes have older sheds, wood decks, and detached garages with open bases that provide easy denning access. The soft soil in many local yards, especially in neighbourhoods with heavy clay or loam, makes digging easy, and well-maintained lawns with regular irrigation pull grubs to the surface throughout the summer months.

Our team at Skedaddle Humane Wildlife Control knows London’s neighbourhoods well. We understand the local housing styles, the most common denning spots, and the seasonal patterns that drive skunk activity in this area. That local knowledge helps us find the den, assess the situation, and put the right exclusion plan in place faster than a less familiar team could.

Frequently Asked Questions

That Smell Under Your Shed Isn’t Going Away on Its Own

A skunk family under your shed doesn’t pack up and leave just because the smell is bothering you. They chose that spot on purpose, it’s cool, hidden, and close to a food source and they’ll stay there as long as the conditions suit them.

The smell, the late-night dog encounters, and the holes in your lawn are all signs that the problem is already established and getting bigger as the young grow and become more active. The longer the family stays, the more waste builds up under your structure and the harder the odour becomes to get rid of.

You should never try to handle this yourself. Approaching a den, blocking entry points without proper exclusion, or disturbing the area creates real risks — for you, your pets, and the animals. Our team at Skedaddle Humane Wildlife Control in London handles the whole job from start to finish.

We inspect the den, use one-way doors to safely exclude the family, seal every entry point with durable materials they can’t dig through, and clean up what’s been left behind. You don’t have to go near any of it.

Request an estimate today and let our team take care of the smell before another summer night goes sideways.