Maybe you’ve heard scurrying above your head or spotted some chewed siding and wondered, “Did squirrels just move into my attic?” If you hear noises during the day, see gnaw marks, or notice piles of nesting stuff, odds are pretty good squirrels found a way inside. You’ll want to do something about it sooner rather than later.
Let’s talk about how to spot the difference between squirrels and other attic invaders. I’ll cover where they sneak in, what to look for, and how you can get them out without causing chaos.
You’ll also learn why tree branches and those tiny gaps matter so much, plus a few simple tricks to keep your home squirrel-free.
How to Tell If Squirrels Are in Your Attic
Start by looking for physical clues where your attic meets the rest of your house.
Noises, droppings, chewed stuff, and daytime activity usually give away a squirrel problem.
Most Common Signs of Squirrels in the Attic
You’ll probably hear noises before you see anything.
Squirrels scratch, scamper, and thump around, mostly at dawn and late afternoon when they’re busy.
You might notice the sounds moving across the ceiling or inside your walls as they dash from rafter to rafter.
Take a look at your roofline for possible entry points.
Holes in soffits, torn fascia, or gaps around vents are big invitations for squirrels.
Chew marks or missing siding near these spots are another giveaway.
Glance outside at your yard.
If you see more squirrels than usual, or notice them heading straight up to your roof, they’ve likely found their way inside.
Identifying Squirrel Droppings and Nesting Materials
Squirrel droppings look like small, rounded pellets—about 3/8 inch long.
Fresh ones are dark brown, but they fade to gray as they age.
You’ll usually spot them in corners, on beams, or near piles of insulation.
As for nesting material, squirrels love shredded insulation, chewed cardboard, leaves, and scraps of paper.
They pack all this into cozy nests (dreys) in attic corners or near vents.
If you need to check droppings, wear gloves and a mask.
Not sure what you’re seeing? Snap a photo and compare it to online guides or ask a pest control pro.
Chewed Wires and Other Damage
Squirrels never stop chewing because their teeth keep growing.
Check for bite marks on electrical wires, plumbing insulation, roof timbers, and soffit boards.
If you find exposed wires, don’t touch them.
Flip off power to the attic circuit before you look any closer, and call an electrician if wires look chewed up.
Insulation can also take a beating.
Squirrels pull it apart to build nests, leaving big gaps and torn sections.
This mess reduces your home’s heating efficiency and can even lead to water damage if they open up holes.
Sounds, Smells, and Daytime Activity
Squirrels mostly move around during the day.
Hearing scurrying in daylight is a strong clue you’ve got squirrels and not something else.
Listen for repeated patterns—morning hustle, evening activity—that’s classic squirrel behavior.
Sometimes you’ll notice smells.
A strong musky or ammonia-like odor could mean several squirrels are up there.
If you catch a rotten, sulfuric whiff, a dead animal might be stuck in the attic and needs to come out fast.
Spotting acorns, chewed bird seed, or piles of nesting debris inside just adds to the evidence.
Gather up all these clues to figure out if you need a pro or can handle exclusion and repairs yourself.
How Squirrels Get Into Attics and Effective Removal Steps
Squirrels squeeze into attics through small gaps, busted vents, or branches that hang over your roof.
You can get them out humanely, seal up entry points, and use repellents or exclusion gadgets to keep them from coming back.
Typical Entry Points Squirrels Use
Check your roof edges, soffits, and eaves for chew marks and any holes the size of a golf ball or bigger.
Loose shingles, busted roof vents, attic louvers, and gaps around chimney flashing all make easy entrances.
Places where cables or pipes enter your house can also let squirrels slip inside.
Branches within 8–10 feet of the roof work like bridges.
Trim them back to make things harder for squirrels.
If you’re up early or out at dusk, watch where squirrels run in and out—sometimes you can spot their secret paths.
Find a hole? Check for fresh droppings, nesting material, or new gnaw marks to see if it’s still in use before you do anything.
Humane Squirrel Removal Techniques
Set up a one-way exclusion door over the main entry hole.
This lets squirrels leave but keeps them from getting back in.
Make sure no baby squirrels are inside before you install it—nobody wants to trap young ones.
Leave the exclusion door in place for a few days, then check for any lingering activity.
If you have to trap, use live cage traps made for squirrels.
Check traps twice a day.
Release any captured squirrels at least 5–10 miles from home if your local rules allow.
Once the attic’s clear, seal the original hole with steel mesh, hardware cloth, or metal flashing so they can’t chew their way back.
If you find a nest with babies or lots of entry points, it’s probably time to call a wildlife removal or pest control expert.
Pros know the legal stuff, can handle safe removal, and take care of cleanup.
Squirrel Repellents and Prevention Tips
Try making your attic less cozy for squirrels—flip on some bright lights or maybe play a radio during the day as you nudge them to leave. You can spray commercial squirrel repellents, or just go with something strong-smelling like peppermint oil, but keep it away from insulation and wiring.
Skip the toxic stuff; poisons just lead to dead animals in the walls and a whole bunch of other problems nobody wants. Put up squirrel-proof bird feeders, and don’t forget to lock down outdoor trash cans and pet food.
Swap out flimsy vents for sturdy metal screens, and pop a cap on your chimney to block entry. Once the squirrels are gone, clean up droppings and swap out any soiled insulation to get rid of smells that might bring new ones back.
Check your roof often, and trim back trees so squirrels can’t just hop right in.
Relevant further reading: learn practical exclusion steps from Bob Vila’s guide on squirrels in the attic.
