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Common Problems · Wildlife

Skunk Under the Deck or Shed

Skunks den under Northeast Wisconsin decks, sheds, and porches — especially in late winter before kits are born in May. The fix is a one-way door once you're sure no dependent young are inside, then burying an L-shaped hardware-cloth barrier so nothing re-digs the spot. BugBoss handles the eviction, the dig-proof exclusion, and any spray odor.

What’s really going on under there

A skunk doesn’t dig itself a den from scratch when it can move into one you’ve already built. A deck, a shed on skids, a porch, a set of concrete steps with a hollow underneath — each is a dark, dry, roofed cavity with a soft dirt floor, sheltered from wind and coyotes, with an easy spot to dig in along the edge. To a striped skunk looking for a maternal den in the cold end of winter, that’s prime real estate. Very often it takes over an existing woodchuck or rabbit burrow that already runs under the structure, saving itself the work.

So the animal under your deck isn’t lost or unusual. It found exactly the kind of den skunks seek, on a property that happens to offer it. Understanding that reframes the fix: the goal isn’t to punish one skunk, it’s to close the den so this one leaves and the next one can’t move in.

The season that drives the whole problem

Skunk timing runs on a tight, predictable schedule in Wisconsin, and it dictates everything about how — and when — you evict one. Skunks breed in late February and March. You’ll notice it: the roadkill count climbs and the musk turns up on cold nights as males roam. Gestation runs about two months, so kits are born around May, in litters of four to seven, and they stay dependent in the den for weeks before they’re mobile enough to follow their mother out to forage.

That May-to-midsummer window is the one that turns a straightforward eviction into a trap. Seal a den with a nursing female excluded and her kits stranded, and they die under your deck — which means weeks of odor seeping up through the floor and a cleanup that involves getting under the structure to remove them. This is precisely why a real skunk job starts by determining whether young are present. Late winter, before kits arrive, and late summer, once they’re mobile, are the clean windows; the middle stretch is handled with care around the litter, not against it.

Identifying an active den

The burrow entrance is the surest sign — a hole four to eight inches across, usually snugged against the deck skirt, shed foundation, or step, often with a spray of fresh dirt fanned out below it. Around an active den you’ll notice a worn path at the entrance and a low, persistent musk in the soil even without a full spray event. Out in the yard, look for the skunk’s foraging signature: shallow, cone-shaped divots punched into the lawn where it’s been digging for grubs and earthworms overnight, and small pits in mulch beds.

The clincher is watching at dusk. Skunks are crepuscular to nocturnal, so a resident will emerge around sundown and return before dawn along the same route. If you see that come-and-go against the deck, you’ve got a tenant, not a passer-through.

Why this is common in our area

This is grub country. Skunks forage heavily on white grubs and earthworms in lawn and pasture, and the well-watered lawns, old orchard ground, and pasture edges around Clintonville and the lake communities produce them in quantity — which supports a healthy skunk population pressed right up against yards and outbuildings. Combine that food base with the local building stock — decks and porches on older homes, sheds set on blocks or skids, pole barns and outbuildings with dig-in gaps, and the woodchuck burrows that riddle rural ground — and you have both the food and the den sites skunks need in close proximity. Lake cabins add the twist of sitting empty in late winter, letting a female den and raise kits under a deck without anyone noticing until the season opens.

The real fix: eviction plus a dig-proof barrier

There are two halves to solving this, and skipping either one guarantees a repeat.

The first is getting the animal out without a spray and without stranding young. The tool is a one-way door fitted over the burrow entrance: the skunk pushes out on its normal dusk trip and can’t reopen it to get back in. It’s calm, it happens at night on the animal’s own schedule, and because nothing is chasing or cornering the skunk, it rarely triggers the defensive spray that clumsy trapping does. Before the door goes on, we confirm there’s no dependent litter; if it’s kit season, we plan around the young rather than force it.

The second half is what makes the fix permanent: a buried, dig-proof barrier. An empty burrow under a deck is still an open invitation, so after the skunk is out we run hardware cloth around the base of the structure and bury the lower edge in an outward L-shape — down into the soil, then bent out horizontally. When any animal tries to dig at the base, it meets buried mesh and quits. That L-footer is the difference between “the skunk left” and “nothing re-digs this spot,” and it stops the next skunk, woodchuck, or rabbit just as well.

Trapping-and-relocation, by contrast, leaves the open burrow behind and risks the spray it’s meant to avoid — which is why it’s not our first move.

How BugBoss handles it

We start with a dusk-timed inspection to confirm an active den, locate every dig-in point under the structure, and assess whether kits are present. We fit the one-way door on the right timeline and let the skunk leave on its own over a night or two. Once we’ve confirmed the den is empty, we install the buried L-shaped hardware-cloth barrier around the deck or shed so the cavity is dig-proof for good. If the den carries heavy musk or there’s been a spray under the structure, we treat the enclosed space and soil to clear the odor rather than leave it to drift into the house.

Because BugBoss does both pest and wildlife work, anything else sharing that crawlspace — a woodchuck, a groundhog burrow, mice pushing in along the same gaps — gets handled in the same job. You deal with the owner, Brian, directly, with no contract and no franchise call center in between.

Keeping skunks from moving back in

The buried barrier is the backbone of prevention, but a few habits keep your yard from advertising itself. Close the gaps under decks, porches, sheds, and steps with buried hardware cloth before an animal claims them. Cut off the food where you can: a lawn with a heavy grub load is a skunk magnet, so grub management reduces both the foraging divots and the draw. Secure the buffet — bring in pet food at night, secure garbage and compost, and pick up fallen fruit under trees. And don’t leave inviting cover: woodpiles, brush, and junk against a foundation give a skunk a staging spot. Walk the perimeter of decks and outbuildings each spring, since a fresh dig at the base in March is the earliest warning that a female is prospecting for a maternal den.

When to call

Call BugBoss as soon as you’ve confirmed a skunk is denning — the earlier in late winter you act, the more likely it’s before kits arrive and the simpler the eviction. Call promptly if you smell a persistent musk under the deck or in the crawlspace, if a dog has been sprayed and keeps finding the source, or if you’re a cabin owner opening up to signs of a den. And treat a skunk that’s out in daylight, staggering, or unafraid as a possible rabies concern — keep people and pets back and report it rather than approaching.

BugBoss is based at 600 S. Main St. in Clintonville and handles denning skunks and other ground wildlife across Clintonville, Iola, Waupaca, and Shawano. Reach the owner directly at 866-BUGBOSS, or request a quote. Humane, dig-proofed, and done without the spray.

Frequently Asked Questions

How do I know a skunk is living under my deck and not just passing through?

Look for a well-worn burrow entrance — a hole four to eight inches across, often with a fan of excavated dirt — tucked against the deck skirt, shed foundation, or concrete steps. A faint, persistent musk near that spot, matted-down entry paths, and cone-shaped divots dug in the lawn nearby (skunks foraging for grubs) all point to a resident, not a wanderer. Dusk is when you'll see it come and go.

Why did a skunk pick under my deck specifically?

Because it's the ready-made den skunks look for: a dark, dry, roofed cavity with an easy dig-in point, sheltered from weather and predators. Decks, sheds, porches, and concrete slabs with a gap underneath are ideal, and skunks will happily take over an old woodchuck or rabbit burrow that runs under the structure. Late winter, when they're seeking maternal dens, is peak move-in time.

When are baby skunks a concern?

Skunks breed in late February and March, and kits are born around May after a two-month gestation. From May into midsummer a female has a litter of four to seven kits that can't leave the den. Exclude her then and the kits are trapped and die under your deck — a serious odor and cleanup problem. That's why a proper job confirms whether young are present before anything is sealed.

Will excluding a skunk make it spray?

Done right, rarely. Skunks spray defensively when startled or cornered, so the whole method is built around not doing that — a one-way door lets the animal leave calmly on its own at night rather than being chased or trapped in the open. Clumsy DIY attempts, on the other hand, are exactly what triggers a spray. Slow, quiet exclusion is both safer and less smelly than trying to force the issue.

Can't I just trap the skunk and relocate it?

It's a poor first choice. Trapping risks a spray, relocation is stressful and often illegal or ineffective, and it leaves the open burrow ready for the next skunk to claim. It also does nothing if there are kits you didn't know about. One-way exclusion plus a dig-proof barrier solves the actual problem — the animal leaves on its own and can't get back in, and neither can the next one.

What's the smell under there even if I don't see spray?

Skunks carry a low background musk that soaks into soil, and an active den under a deck holds that odor even without a full defensive spray. If a skunk has sprayed under there — during a territorial scuffle or a scare — the smell can linger for weeks and drift into the house through crawlspaces and floor gaps. Removing the animal and, when needed, treating the soil and enclosed space clears it.

Is a skunk under the deck actually dangerous?

The spray is the obvious problem, but skunks are also a leading rabies vector in the Midwest, so one that's active in daylight, disoriented, or aggressive should be treated with real caution and reported. They can carry fleas, ticks, and canine roundworm as well. For a curious dog, a face full of skunk spray is a miserable and sometimes vet-worthy encounter. It's worth resolving, not living with.

How does the dig-proof barrier work?

After the skunk is out, we install hardware cloth around the base of the deck or shed and bury the lower edge in an outward-facing L shape — down and then out under the soil. When an animal tries to dig at the barrier, it hits buried mesh instead of open dirt and gives up. This is what stops the next skunk, woodchuck, or rabbit from simply re-excavating the same welcoming spot.

How long before the skunk is gone?

Once the one-way door is installed and there are no dependent kits, the skunk usually leaves within a night or two on its normal dusk foraging trip. We confirm the den is empty before sealing the barrier permanently, so the whole process is typically a few days. If the timing falls in the May-to-midsummer kit season, we plan around the young rather than force an eviction that would strand them.

My dog got sprayed — what actually works?

Skip the tomato juice. The effective home remedy is a fresh mix of hydrogen peroxide, baking soda, and a little dish soap worked into the coat and rinsed out, repeated as needed, keeping it away from the eyes. It neutralizes the odor chemically rather than masking it. That handles the dog; getting the skunk out from under the deck is what stops it happening again next week.

Why use BugBoss for a skunk instead of a pest-control company?

A skunk under the deck isn't a pest-control spray job — it's wildlife exclusion, and most companies servicing this area don't do it. BugBoss does both, right from Clintonville, so we handle the humane eviction, the buried dig-proof barrier, odor treatment, and any other wildlife using the same crawlspace. You reach the owner, Brian, directly, and there's no contract to sign.

Got a pest or wildlife problem? Talk to Brian.

Local, family-owned, licensed & insured. No long-term contracts — just the problem solved.

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Prefer to talk? Call 866-BUGBOSS or email office@bugbosswi.com.

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