Skunks dig under porches, decks, sheds, and foundations to create dens where they sleep, mate, and raise young. A single skunk family can cause significant damage to landscaping and foundation structures, and their presence near your home means you are one startled pet or late-night encounter away from a full spray. This guide covers how to identify active skunk dens, encourage skunks to leave humanely, and seal burrows permanently so they do not return.
Key Takeaways
- Signs of activity: Look for 6-8 inch cone-shaped holes near foundations, musky odor, and tracks with five toes and visible claws.
- Eviction first: Never seal an occupied den. Use harassment techniques and one-way doors to encourage skunks to leave before sealing.
- Seal properly: Use 12-gauge galvanized hardware cloth buried at least 12 inches deep to prevent digging.
- Time it right: Avoid sealing during baby season (April to August) when kits may be trapped inside.
- Professional help: For structural damage under slabs or large colonies, call a licensed wildlife control operator.
How to Identify an Active Skunk Den
Skunks are not tunnel specialists like groundhogs, but they will enlarge existing gaps and excavate shallow burrows when the conditions are right. Their dens usually have a single entrance hole about 6 to 8 inches wide, shaped like a half-moon or cone where the soil has been pushed outward. You may find fresh dirt scattered around the entrance or dragged into nearby vegetation.
Striped skunks (Mephitis mephitis) prefer dry, dark, enclosed spaces. They commonly den under concrete slabs, wooden decks, porch steps, rock piles, wood piles, and abandoned sheds. They will also use hollow logs, culverts, and the crawl spaces of mobile homes when the skirting is damaged.
To confirm active occupation, check for the following signs. A strong, musky odor near the entrance or vent openings is a reliable indicator. Look for small conical digging holes in the lawn or garden where skunks have been foraging for grubs and insects. Skunk droppings are similar to cat feces but often contain undigested insect parts and seeds. Tracks show five toes on each foot with visible claw marks. The heel pad on a skunk footprint is longer and more narrow than a raccoon track.
Encouraging Skunks to Leave Humanely
Before you seal any burrow, you must be certain the den is empty. Sealing a skunk inside is dangerous for the animal and for you. A trapped skunk will dig frantically, damage structural supports, and may die of dehydration or starvation. An agitated trapped skunk will also spray if you open the sealed area later.
The most humane approach is to make the den uncomfortable. Install a motion-activated sprinkler aimed at the entrance. Place bright floodlights on the area at night since skunks prefer dark spaces. Soak rags in ammonia or place predator urine granules (coyote or fox) near the entrance to simulate a threat. Repeat these methods for 5 to 7 consecutive nights.
One-way door systems are the most reliable eviction tool. A one-way door is a wire mesh panel fitted over the entrance with a flap that lets the skunk exit but prevents re-entry. Install the door in the late afternoon or early evening when skunks are actively leaving to forage. Check the door daily. After 72 hours with no signs of re-entry, the den is likely empty. Remove the one-way door and prepare to seal the opening permanently.
Materials for Sealing Skunk Dens
Skunks are strong diggers with powerful front claws. They can push through loose soil, rotted wood, and lightweight wire mesh. You need durable materials that create a physical barrier the skunk cannot breach. The following items are essential for a permanent seal.
Materials Checklist
- 12-gauge galvanized hardware cloth with 1/2 inch mesh
- Heavy-duty wire cutters and tin snips
- Galvanized staples or concrete screws with washers
- 3/4 inch exterior-grade plywood (for large gaps)
- Backfill soil or crushed stone
- Dug trench 12 inches deep around the foundation perimeter
Do not use chicken wire or standard welded wire fencing. Skunks can chew through or bend these materials with persistence. Expanded foam sealant alone is not sufficient for ground-level gaps; skunks will dig around or through it. Combine a rigid barrier with buried hardware cloth for the best result.
Step-by-Step Sealing Process
Step 1: Confirm the den is empty. Use the tracking powder method or a remote camera placed at the entrance for 3 to 5 days. If you see no activity during the night, proceed. If you are unsure, use a one-way door for one week.
Step 2: Excavate the entrance. Dig out the loose soil around the opening to expose the gap beneath the structure. Clear at least 6 inches of space around all sides so you have room to work with wire and fasteners. Remove any debris, trash, or old nesting material.
Step 3: Install the hardware cloth barrier. Cut a piece of 12-gauge hardware cloth at least 8 inches larger than the gap on all sides. Bend the bottom 12 inches outward at a 90-degree angle to create an apron. This buried apron prevents skunks from digging down and under the barrier. Place the apron into a 12-inch deep trench along the foundation.
Step 4: Secure the barrier. Fasten the hardware cloth to the structure using galvanized staples into wood or concrete screws with washers into masonry. Space fasteners every 4 to 6 inches along the edges. The barrier must be tight with no gaps or wrinkles. Fill the trench with backfill soil or crushed stone and compact it firmly.
Step 5: Backfill and grade. Cover the buried apron completely with soil. Slope the ground away from the foundation to prevent water pooling. Skunks are less likely to dig in areas where the soil is compacted and well-drained. Monitor the sealed area weekly for the first month.
Seasonal Considerations and Timing
Timing your den removal correctly is critical for both safety and legal reasons. Skunk breeding season runs from February to March, and kits are born in April through May. The kits remain in the den for about 6 to 8 weeks before they start following their mother on foraging trips. During this period, the female will defend the den aggressively and may spray more readily.
The best time for den removal and sealing is late summer through early winter (September through January). By this period, the young have dispersed and the adults are seeking winter dens. If you seal burrows in early fall, you prevent skunks from re-establishing winter shelter near your home. In colder regions, check for signs of hibernation use before sealing.
When to Call a Professional
Some situations require experience and equipment that most homeowners do not have. If the den is under a concrete slab or a permanent foundation, digging and sealing requires structural knowledge. If the crawl space is large and multiple entrances are present, a professional can locate and seal all access points in a single visit.
Cases where the skunk has already sprayed inside the crawl space are best handled by professionals. The odor can penetrate HVAC ducts and living spaces, requiring specialized enzyme cleaners and ozone treatment. A licensed wildlife operator can also handle trapping and relocation if the eviction methods fail.
Frequently Asked Questions
Can I just fill the hole with dirt?
No. Skunks will dig back into the same spot within 24 hours if the den is still occupied or if they are not deterred from the area. You must remove the animal first and install a physical barrier.
How deep do skunks dig their burrows?
Skunk burrows are typically shallow, ranging from 6 to 24 inches deep. They prefer to use existing gaps rather than dig long tunnels, which is why they target loose soil under structures.
Will mothballs or ammonia get rid of skunks?
These methods may encourage skunks to leave temporarily, but they are not long-term solutions. The skunk will return once the scent fades. Physical exclusion with hardware cloth is the only permanent fix.
Do skunks return to old dens?
Yes. Skunks have strong site fidelity and will return to previous den locations year after year if the site remains accessible. This is why thorough sealing is essential.
How long does a skunk stay in one den?
During mild weather, a skunk may stay in one den for 1 to 3 weeks. In winter, they may remain in a single den for several months. Females with young stay in the maternal den for 6 to 8 continuous weeks.
Why Trust Us
WildAnimalsCentral has been providing expert wildlife control guidance since 2015. Our content is researched and reviewed by licensed wildlife control operators and professional exterminators with decades of combined field experience. We cite peer-reviewed literature from the Journal of Wildlife Management and the National Wildlife Control Operators Association. Our exclusion recommendations follow the standards set by the Wildlife Control Operator training curriculum and the National Pest Management Association.
This article was updated in 2026 with the latest best practices for humane skunk eviction and permanent exclusion. We test every product and technique we recommend in real-world conditions before publishing.
