Groundhog Under Your Deck or Barn in Indiana? What to Know
Last updated: October 27, 2026
If you've found a fist-to-basketball-size hole with a fan of dirt kicked out in front of it, tucked tight against a deck footing, shed slab, or barn wall, you've almost certainly got a groundhog burrow. The hole itself isn't just an eyesore — the tunnel behind it can run several feet deep with multiple exits, and when it's dug next to a structure it can undermine the soil the structure sits on. Right now, in the cold months in Northeast Indiana, the groundhog is likely hibernating deep in that burrow. It will be active again in late February or March, which is when the damage — and the calls — start.
Signs a Groundhog Has Burrowed Under Your Deck or Barn
- A burrow entrance roughly the size of a fist, sometimes larger, with a distinct fan of freshly excavated dirt in front of it.
- Multiple connected holes around the same area — groundhogs always dig at least one secondary exit.
- Entrances pressed right against a foundation wall, deck footing, shed slab, or barn wall, which gives the burrow overhead protection.
- A garden or flower bed chewed down close to the ground, usually overnight.
- Ground near the entrance that sounds hollow or feels soft underfoot.
- A stocky brown animal sunning itself near the burrow entrance on a warm day, retreating down the hole when you get close.
Groundhogs are daytime animals, so you may see one coming and going during daylight hours — unlike raccoons or possums, which are mostly active at night and are the usual suspects when activity under a structure continues through the deep winter.
When They Come Out of Hibernation in NE Indiana
Groundhogs are true hibernators. Through late fall they feed heavily to build fat reserves, then retreat into deep hibernation burrows for the winter. In Northeast Indiana, that means a groundhog that settled in under your deck or shed in the fall is likely still down there now, dormant — which is why the burrow looks quiet in January and why so many homeowners assume the problem solved itself when it didn't.
They come back out of hibernation in late February into March, as the days lengthen and temperatures thaw. That's the window when the calls start and when the trapping season opens again. The same animal usually returns to the same burrow, and the females come out of hibernation ready to dig and feed — so a burrow that sat quietly all winter can turn into a busy, growing tunnel system within a matter of weeks each spring.
Why Fumigants and Filling in Holes Fail
Gas cartridges, mothballs, and ammonia-soaked rags sold as groundhog repellents rarely work. A burrow system has more than one exit, so a fumigant pushed into one entrance simply gets vented out another, and the animal just moves to the far end while it dissipates. Even where gas does reach, a multi-exit burrow makes it hard to keep enough in one place long enough to matter.
Filling in the hole without removing the animal is the most common DIY mistake — and it fails about as fast as you can dig. A groundhog that's still living in the tunnel will simply re-dig the entrance, often within a day, and now you've lost an afternoon and still have the problem. The hole has to be addressed after the animal is trapped, not instead of trapping it. And if you seal every entrance while the groundhog is inside, you risk trapping it in place and turning a removal job into a much larger structural and odor problem.
Safety: When It's More Than a Yard Problem
The reason we take groundhog burrows seriously is that they are one of the few wildlife problems that can genuinely damage a structure. A tunnel dug against a foundation wall, under a deck footing, or beside a shed slab removes supporting soil in exactly the place that matters, and over enough seasons that can contribute to settling — a sinking corner of a patio, a tilting shed slab, or a cracking foundation step. If the ground under a deck sounds hollow underfoot, treat it as a real issue rather than just an animal to evict.
On farms and horse properties, the biggest risk is often in the pasture, not under a building. A burrow hole or toppling tunnel in a paddock is a leg-break and trip hazard for horses being ridden or turned out, and a burrow that collapses under a horse's hoof can injure both the animal and the rider. Property owners with horses are typically the most urgent to address a groundhog burrow before turnout resumes in spring. If you're dealing with this at a farm or stable, see our farms and horse stables page.
When to Call a Pro
Call once you've confirmed a groundhog burrow near a deck, shed, barn, foundation, or pasture you intend to protect. It's especially worth calling sooner if the burrow sits against a structure, if the ground sounds hollow, if you have horses or livestock on the property, or if you've already filled a hole only to see it re-dug. Late winter into early spring is the key window in Indiana — catching the animal before it rebuilds and expands the system after hibernation is far easier than chasing an established multi-entrance burrow in the middle of summer.
We map every active burrow entrance first, since a groundhog system almost always has more than one exit and treating only the visible hole misses the point. Humane cage traps go on the animal's established travel routes, checked and rebaited on follow-up visits until the burrow is confirmed vacated. Once trapping is done, we can talk through backfilling the remaining entrances so the burrow doesn't become an inviting shelter for the next animal. Every job is done by a licensed and insured technician and backed by our guarantee. See our groundhog trapping service and pricing for more, or request a free estimate.
We handle groundhogs across Northeast Indiana, including Nappanee, Fort Wayne, and Huntertown and the towns around them.
Frequently Asked Questions
Why does the groundhog dig right next to my deck or barn?
Foundations, deck footings, and shed or barn slabs give a burrow overhead protection and a stable structure to dig against — exactly what a groundhog looks for. It's a common spot, not a coincidence.
Will the groundhog come back when it wakes up from hibernation?
Usually yes. A groundhog that established a burrow under a structure in fall typically returns to the same burrow in spring, ready to feed and reproduce. That's why trapping in late winter into early spring is the window that prevents a quiet hole from becoming a busy system.
Can a burrow under my deck actually cause foundation or porch damage?
It can. A tunnel that removes soil next to a foundation, deck footing, or shed slab can contribute to settling over time — a sinking patio corner or a tilting slab. It's worth addressing before it becomes a structural repair instead of a trapping job.
Is a burrow hole in my pasture dangerous for my horse?
Yes. A burrow hole or a tunnel that collapses under a horse's hoof in a paddock is a leg-break and trip hazard. Owners with horses typically want the burrow addressed and backfilled before turnout resumes at spring.
Why do natural repellents and filling the hole not work?
A groundhog burrow has multiple exits, so gas and repellents vent out another entrance and the animal just moves to the far end. And filling a hole while the groundhog is still inside simply gets re-dug, often within a day. The animal has to be trapped first — that's the only way to actually remove it.
TODO-owner: Add one real job anecdote here — for example a horse owner who found a collapsing tunnel in a paddock at turnout, and how trapping plus backfilling cleared the pasture.
TODO-owner: Add a photo of a groundhog burrow entrance against a structure, or an installed cage trap, once supplied.