What should you do about skunks under a deck?

You step out onto the back deck with your morning coffee, notice a faint musky odor hanging in the air, and spot a patch of freshly turned dirt near the lattice. Chances are you have an uninvited guest living in the crawl space beneath your floorboards. Think of an open deck as the equivalent of a heated studio apartment left completely unlocked in a quiet neighborhood. Skunks are naturally drawn to these dark, dry, predator-free voids because they offer the ultimate shelter for resting or raising a family.

You cannot just run out with a board and nail it shut right away. If an animal is hooping up underneath your feet, sealing the opening traps it inside. That leads to a slow, distressing death for the animal, an unbearable odor that seeps up into your living room, and frantic digging as the trapped creature tries to claw its way back out. Management requires a deliberate, step-by-step approach that focuses on prevention, monitoring, and permanent physical exclusion rather than quick fixes.

Before you touch a single tool, you have to find out if the space is actually occupied right now. The best way to check is to place a soft movement indicator across the entry point. You can wedge crumpled newspaper loosely into the gap, cross two strips of painter's tape over the opening, or smooth out a thin layer of flour on the ground right where the animal squeezes through.

Leave that indicator alone for 3 consecutive days of clear, dry weather. If you come out on the fourth morning and find the newspaper shoved aside, the tape torn, or paw tracks stamped into the flour, you have a resident. If the indicator remains completely undisturbed through those three days, you can safely move forward with sealing the space.

Figuring out who is living under your deck usually comes down to reading the physical clues left behind in the dirt. Skunks are built for digging, and their footprints look quite different from those of neighborhood cats or stray dogs wandering through your yard. Front and hind paws usually feature five distinct toes, and you will see long, prominent claw marks stretching out ahead of the toe pads because they rely on those claws to break up soil and find grubs.

Scat offers another clear sign if you know what to look for, though you should never touch droppings with your bare hands. Skunk droppings are typically tubular, measuring up to 20 mm in diameter, with blunt ends. They tend to crumble easily and are packed with undigested insect parts like beetle legs, seeds, or small berry fragments. You might also spot shallow, cone-shaped pits dug into your lawn nearby where the animal spent the night foraging for lawn grubs.

Do not assume you are dealing with a skunk just because you smell one. Raccoons, opossums, and woodchucks frequently share these same under-deck spaces. A skunk's track is distinct because of that fifth toe and the visible claw impressions, whereas a domestic cat leaves a four-toed print with no claws showing at all.

Timing also matters immensely. If you notice activity between March and July, you usually are dealing with a female raising a litter of kits. Sealing an entry point during this maternity window traps helpless young underneath, which creates massive problems when the mother panics.

Once you confirm the den is vacant through your three-day monitoring test, your main job is to install subterranean exclusion skirting so nobody can move back in. Chemical repellents like mothballs and ammonia do not work well over the long haul, and they release toxic vapors that can drift up through your floorboards and into your home. Ultrasonic sound emitters are equally useless because wild animals quickly grow accustomed to the noise and ignore it.

Permanent exclusion requires physical hardware that stops digging at the source. You will want to use heavy-gauge wire mesh, often sold as hardware cloth, fastened securely to the wooden frame of your deck. Do not just stop at ground level, because a skunk will simply dig right underneath the wire.

You need to dig a narrow trench about 6 inches deep directly beneath the perimeter of the deck. Take the bottom edge of your wire mesh and bend it outward at a right angle into a 12 inch horizontal L-shape away from the deck.

When the animal walks up to the edge of the deck and tries to dig down, its paws hit that buried horizontal shelf of wire mesh right away. Confused by the barrier, it abandons the excavation attempt and moves on. Backfill the trench with soil or gravel, and clear away any nearby brush piles, pet food bowls, or unsecured garbage cans that drew the animal to your yard in the first place.

There are moments when a DIY approach is the wrong choice and you need to hand the situation over to a professional, a clinician, or a local agency. If you suspect or confirm that dependent skunk kits are tucked under the deck during the spring nursing season, pause all exclusion work and call a licensed wildlife control operator. Forcing an eviction too early spells disaster for the litter and creates a severe sanitation hazard for your home.

Skunks are a primary reservoir for the rabies virus. If an animal under your deck is wandering around in broad daylight, showing unprovoked aggression, foaming at the mouth, walking in circles, or dragging its hind legs, keep your distance. Never attempt to handle, capture, or corner a sick or erratic wild animal.

If you, a family member, or a pet suffers a bite, a scratch, or direct contact with the saliva of an unfamiliar animal, wash the wound immediately with soap and water for several minutes. Contact emergency medical services, your family physician, or public health officials right away to determine if rabies post-exposure treatment is necessary. Leave the trapping, the handling of sick wildlife, and complex extractions to trained professionals who have the proper gear and legal permits to manage the risk safely.