Ever wake up in the middle of the night to scratching noises or discover chewed wires and wonder what’s hiding inside your walls? Squirrels love to nest in wall cavities and attics, and honestly, they leave some pretty obvious clues—scurrying sounds, gnawed openings, and sometimes, a smell that’s hard to ignore.
If you’re hearing noises or spotting fresh chew marks, chances are good a squirrel’s moved in. It’s time to do something about it—safely, of course.
This guide will help you spot squirrel activity, explains how pros (and you, if you’re up for it) can remove them, and shows how to seal up your home so they don’t return.
Let’s walk through what to check, what to skip, and when it’s probably a good idea to call an expert.
Identifying Squirrels Inside Walls
Listen for noises, look for chewed openings, and check for droppings or nesting debris. These clues help you figure out where squirrels get in, how long they’ve been there, and what repairs you’ll need.
Common Signs of a Squirrel Infestation
First, you’ll probably hear something—scratching, scurrying, squeaks, or even thumps, usually during daylight. Pay attention to where and when you hear it. Squirrels tend to make noise near exterior walls or above ceilings, especially early in the day or around midday. That’s a big hint it’s not a mouse or rat, since those guys are mostly active at night.
Look around for more clues inside. Fresh gnaw marks on drywall, baseboards, attic beams, or vents mean recent activity. You might spot shredded insulation or even leaves and twigs stuffed into odd places.
Pets sometimes get obsessed with a particular wall or start pawing at spots where squirrels move behind the scenes.
Smells can give things away, too. If you catch a strong ammonia scent or something downright rotten, you might be dealing with urine, droppings, or even a dead squirrel. Hearing lots of constant, high-pitched noises? That could mean babies are tucked away inside.
Entry Points and Damage Assessment
Head outside and check along the roofline, soffits, vents, and chimney for any holes or gaps. Squirrels can squeeze through spaces as small as 1.5–3 inches—surprisingly tiny. Look for chewed edges on vents, loose shingles, torn screens, or spots where siding meets trim.
Peek into your attic or wall cavities if you can. Squirrels chew wires and rip up insulation, which is a fire hazard and can cause leaks. Notice sagging gutters or tree bark stripped near the roof? That’s probably how they keep getting in.
Jot down a quick checklist:
- Where are the holes and how big are they?
- What’s chewed—wires, wood, vents?
- Any nests or piles of nesting material nearby?
Snapping some photos helps you track changes or show a wildlife pro if you call one in.
Recognizing Squirrel Droppings and Tracks
Squirrel droppings are about 3/4 to 1 inch long, kind of like elongated pellets with one tapered end. You’ll usually find them near entry holes, in attics, or along baseboards. Fresh droppings look dark and moist, while old ones turn dry and crumbly. Don’t touch them—wear gloves and a mask just to be safe.
Look for small, five-toed tracks in dust or soft soil near entry points. Inside, you might spot tiny claw marks in insulation or on dusty ducts. Grease marks are another clue—squirrels leave smudges where they squeeze through gaps.
If you find droppings, chew marks, and hear daytime noises, it’s almost certainly squirrels. For cleanup or if you want photos for proof, it’s smarter to call a wildlife pro instead of handling it yourself.
How to Safely Remove and Prevent Squirrels in Walls
You can get rid of squirrels without hurting them and keep them from coming back by finding their entry points, using humane exclusion or traps (if that’s allowed), handling baby squirrels carefully, and sealing up all openings with metal.
Steps for Effective Squirrel Removal
Start by listening early or late in the day to pinpoint where squirrels come and go. Watch from a safe spot for 30–60 minutes to spot active holes.
Use a flashlight and binoculars to check eaves, vents, rooflines, and places where wires enter.
If you think babies might be inside, set up a one-way exclusion door on the main exit. Adults can leave but can’t get back in. Leave it up for 3–7 days and keep an ear out for any sounds. If all’s quiet, take the door down and seal the spot with 1/4-inch hardware cloth or metal flashing.
If exclusion doesn’t work, try a live trap with peanut butter or nuts. Check traps twice a day and follow your local rules on relocating wildlife. Always wear thick gloves when handling traps—nobody wants a squirrel bite or to catch something nasty.
Keep listening after you seal things up. If you still hear movement, open a safe exit again—don’t risk a squirrel dying in your wall. That smell is something you’ll never forget.
Dealing With Baby Squirrels and Nesting Materials
Hear high-pitched squeaks? You might have babies in there. Don’t seal up holes until you’re sure the babies can get out on their own. Moms leave to find food and always come back. If you trap her outside, the babies could die inside, and you’ll end up with a mess and bugs.
If you find a fallen baby or a nest, use gloves and put the material in a ventilated box. Call a licensed wildlife rehabilitator right away—baby squirrels need special care. Don’t try to feed them milk or people food; you could make things worse.
Wear a mask and gloves when cleaning up nests or droppings. Squirrel mess can carry bacteria and parasites. Remove all soiled material, disinfect the area with a wildlife-safe cleaner, and let it dry before you seal everything up for good.
When to Contact a Wildlife Removal Professional
Call in a pro if you can’t find every entry point, need to cut into walls or roofs, or hear babies you can’t reach. Wildlife experts know the laws and can get permits for trapping or relocation.
Pick a company that uses humane exclusion and offers a written guarantee. Ask about their squirrel experience, if they use one-way doors or live traps, and how they handle nests and babies. Get an estimate that covers sealing, repairs, and follow-up visits.
If you hear chewing near wires or think there’s structural damage, don’t wait. Squirrels can chew through electrical wires and insulation, risking fire and expensive repairs. A pro can work with electricians and repair crews if you need more help.
Prevention Strategies to Keep Squirrels Out
Seal up any gaps bigger than half an inch with metal flashing, 1/4-inch galvanized hardware cloth, or copper mesh. Squirrels love to chew on wood and softer stuff, but they just can’t get through metal mesh.
Cut back tree branches so they’re at least 8–10 feet away from your roof. This makes it a lot harder for squirrels to leap onto your house.
Add chimney caps with 1/4-inch mesh. Cover attic and soffit vents with sturdy metal screens.
Bring pet food inside, and if you feed birds, try using squirrel-proof feeders. It might feel a bit over-the-top, but these steps really help keep attractants down.
Spray capsaicin or use commercial squirrel repellents around entry points if you want a quick fix. Still, nothing beats physical barriers for actually keeping them out for good.
Take a look at your roofline and vents twice a year, and definitely after big storms. You’ll spot any damage early and avoid surprises.
