Squirrel nests are typically built high between strong tree branches, inside tree cavities, or near the base of tree trunks. Oaks, beeches, elms, and maples are common homes for both grey squirrels and red squirrels. Squirrels build nests for a safe place to give birth or to provide a dry, warm shelter during the winter. An attic provides all the necessary conditions for an excellent squirrel nest.

Squirrels are excellent climbers. Tree branches provide easy access to your roof. Squirrels typically find access points to your attic through a fascia, ridge vents, gable vents, roof returns, and soffits.

What are the Signs of Squirrels in the Attic? 

  • Sounds. There’s a good chance you’ll hear a squirrel before you see any visual evidence, especially during winter months, where you’re less likely to notice exterior damage. The sounds squirrels make are often described as scurrying, scampering noises in attic. You might also hear chewing or gnawing sounds. Squirrels like building their nests in attics, so sounds will often emanate from there. Squirrel sounds are often mistaken for rat sounds, but there’s one key difference: squirrels are diurnal, so you’ll hear them during the day, whereas rats are nocturnal, and will make more sound at night.
  • Nests in Your Attic. Squirrels are well known for nesting in attics, as they provide a safe hideaway for squirrels to raise their young. The inside of an attic is also full of things for them to nibble and sharpen their ever-growing teeth on, like wood and insulation. When a squirrel chews the insulation on electrical wiring, the possibility of a house fire arises. Squirrels enter attics through crevices, gaps, and cracks in soffits, fascia boards, and eaves, or open vents or broken shingles in the roof. Once squirrels reach the attic, they have free reign of the house.
  • Squirrel Droppings Inside Your Home. Squirrel droppings are often confused for rat droppings, and vice versa. While rat and squirrel droppings do look similar—dark brown to black in color with blunted ends, around 3/8 of an inch long—they are found in different places around the home. Squirrel droppings are often found in attics or around tree trunks, while rat droppings are more common along baseboards, in cupboards, and behind large appliances like washing machines.
  • Chewed Roofing Materials. Another popular nesting site for squirrels is in the roof. Typically, they build these nests with roofing insulation. Take some time to carefully analyze your home’s exterior. Squirrels commonly damage roofs by:
    • Chewing holes in soffits. This can allow other small pests to invade your home.
    • Biting through shingles. This can lead to water damage.
    • Eating through joists and siding. This can weaken your home’s structure.

To prevent squirrels, it is critical to keep one’s roof in good shape. Regularly inspect it for any damage, and repair as needed. To cover small holes, use steel mesh, not aluminum or plastic. Squirrels can chew through plastic and soft metals like butter.

Why Do Squirrels Go in Attics? 

Squirrels have different motivations to enter your attic. Squirrels can have two litters a year. It will vary depending on what part of the country they live. Generally, a squirrel will have a litter in the spring and a second in the early autumn.

Squirrels do not hibernate. They do need a warm shelter that provides protection from harsh winter weather.

They gain access to attics by chewing holes above gutters or at construction gaps where dormers meet the roofline. Squirrels will also chew corners of trim or any weak area that gives them access to a shelter. 

What Damage Can Squirrels Cause in Attics? 

Squirrels often cause damage to attic insulation or electrical wiring in the attic. But the most damage is done over time as multiple litters of squirrels are born in or near the home. As these squirrels grow and leave the nest, they often will set up their own nests within the same attic.

If the initial intrusion is not addressed in time, the damage to your home will increase quickly. Not only will they continue to chew through wiring and damage insulation, but in doing so, they will create more entry points for other squirrels.  

How Critter Control Gets Rid of Squirrels in the Attic

The best and safest way to remove squirrels from your attic is by calling the experts at Critter Control. Never approach nuisance squirrels without professional help. Squirrel repellents do not provide a long term squirrel control solution. Mothballs are dangerous. Bright lights will initially scare the squirrels away, but eventually they will grow used to them.

One-Way Doors

This is the safest method of squirrel removal. First, you must locate all the entry points the squirrels are using. Then you must install the one-way door, making sure there are no gaps around it. After installing the one-way door properly, seal all other entry points in the attic so the squirrels will have only one way to leave—through the door. After the squirrels leave, remove the door and seal the entry.

Note: One-way doors can separate mother squirrels and their young. This can result in a rather inhumane situation: mother squirrels doing serious damage to your house while trying to get back in to retrieve their babies, and these babies starving. Therefore, if squirrel babies are part of the equation, we recommend contacting a professional wildlife removal service.

Live Traps

If a one-way door is not successful or there are babies present, using live traps with bait is another effective method to get rid of squirrels in the attic. If babies are present, you will need to retrieve the babies with proper animal handling gloves.

  • Live traps should be securely placed on a roof, in an attic, or on the ground, however, choosing a location on the ground may lead to catching non-target small animals.
  • When trapping squirrels, it is important to thoroughly inspect the attic before sealing entry points, because you need to ensure you caught all target squirrels.

You will need the proper PPE for the job. If squirrels are in your attic, there will likely be squirrel feces and urine in your attic, which carry bacteria that you don’t want to breathe in. Respirators and animal handling gloves should always be used.

Once the squirrels are safely removed, we identify and seal all entry points to prevent future squirrel infestations.  Squirrel exclusions are the most effective, long-term solution to a squirrel problem. Critter Control uses the most advanced techniques in the industry to safely and humanely remove squirrels from your attic. Common squirrel removal techniques include a live trap or installing a one-way excluder valve.

Before performing squirrel trapping on your own, make sure you know local laws, as many states have restrictions on harming/killing squirrels. Additionally, inspect the attic thoroughly before taking any action to see if baby squirrels are present. If they are, you will need to take extra steps to remove them as well, since they cannot survive without their mother.

Attic Remediation after Squirrel Infestation

After a squirrel infestation, attic remediation is a must. This step restores your attic to a safe and clean condition, removing all traces of the squirrels’ presence.

Clean Up

Squirrel infestations leave behind contaminated materials that must be carefully removed. Our cleanup process includes:

  • Safely disposing of nesting materials and squirrel droppings.
  • Using specialized sanitation agents, such as industrial-grade disinfectants, to disinfect the area.
  • Eliminating harmful bacteria and odors to make your attic a safe environment once more.

Remove and Replace Insulation

Your uninvited attic guests may damage insulation during their stay, nesting in it and contaminating it with urine and droppings. During our inspection, we’ll evaluate the insulation and replace it if necessary. Generally, we recommend insulation replacement when:

  • Areas are heavily contaminated with rodent waste.
  • Insulation has suffered significant water damage.
  • Insulation is old and no longer effective.
  • There are signs of mold or mildew growth.

We can help prepare insurance bids for insulation replacement to ensure a seamless transition. We work with most major insurance companies to ease the financial burden.

TAP Pest Control Insulation

As part of the remediation process, we offer Thermal Acoustical Pest (TAP) Control Insulation. This is a specialized insulation that offers multiple advantages over run-of-the-mill insulation, including:

  • Pest resistance: TAP insulation is infused with boric acid, which deters insects and other pests.
  • Energy efficiency: It helps with temperature regulation, adding a layer of insulating protection that reduces heating and cooling costs.
  • Noise reduction: TAP insulation offers superior soundproofing compared to traditional insulation, helping keep your home quieter and more comfortable.

We install TAP insulation to provide long-term protection against future infestations while improving energy efficiency and reducing noise.

Contact Critter Control Today

If you suspect you have a squirrel infestation in the attic or need help getting rid of squirrels, our experienced team at Critter Control is here to help. We’re experts in safely and humanely eliminating pest infestations, including rodent infestations, in attics. After eliminating the problem, we won’t leave your attic in shambles—we’re experts in attic remediation, too.

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Lon Barrett profile picture
Lon Barrett
11 September 2026
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Dustin did a great job. I just could not longer afford it on a retirement income. They were the only oneddds I could find that controlled rabbits.
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CR Warner profile picture
CR Warner
11 September 2026
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We had such a great experience with Critter Control at every interaction. Many months ago, my friend and I called to get some advice on how to handle a bat in our home. The lady we spoke with took the time to give us free, down to earth, real advice. I remembered the experience so when it came time to batproof our attic, they are who we called. The gentleman that came out to do the quote was thorough and patient in explaining everything. The gentlemen that did the bat proofing were quick, efficient and friendly. A few months later we had them back to clean out and insulate our attic. Very friendly crew, extra helpful, and were respectful to our home and good with our German Shepherd. Just a stellar experience all around. Recommended them to my friend, and I'll recommend them to you!
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Irene Snyder profile picture
Irene Snyder
10 September 2026
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Critter Control was prompt in scheduling the initial visit to assess the problem and detailed in explaining their service. Drew has been prompt in all communications and careful while on the property. It has been reassuring in working with them to resolve the issue.
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Bob Sturgis
10 September 2026
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Cody just came back for his one year checkup as he promised when performing the job in 2025 - consistently outstanding service from him, great communication, always trying to go above/beyond!
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Sandra Goodwin
10 September 2026
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Critter control-Taylor, the owner, is quite knowledgeable about critters. He was friendly and thorough.
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Bruce Morris profile picture
Bruce Morris
10 September 2026
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They were a pleasure to work with I would highly recommend them. Roman is very knowledgeable and made the process smooth. The crew came out and went over and above. They were professional and timely. Everything about the experience was a pleasure and smooth, Thank you!
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J A profile picture
J A
10 September 2026
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I have used this company many times for all different things. They always respond as fast as possible. Wasp problem? Bug problem? Call them! The honesty that was shown when things aren’t truly needed shows that if you need pest services, call Critter Control first. You will get honest and thorough services. And you will call them again if you need it. 5 stars.
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k ranuccifrazier
10 September 2026
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I couldn’t be happier with my experience with Critter Control and, especially, with Taylor and his partner. Taylor called the evening before my appointment to confirm and took the time to explain what they would be looking for and what the inspection would involve. He also let me know that I would receive a written estimate when they were finished, which I really appreciated. The next morning, Taylor called before arriving and showed up right within the scheduled window. He introduced himself and his partner, and they were both extremely professional and courteous. They took their time inspecting the yard and ultimately determined that I was dealing with both moles and gophers. Taylor walked me through the treatment options, answered every question I had, and made sure I understood what they were recommending. There was absolutely no pressure, and I really appreciated how straightforward and transparent the entire process was. I had a written estimate in hand within about 10 minutes of them completing the inspection. From the initial phone call to the completion of the inspection, everything was handled professionally and exactly as promised. It’s refreshing to deal with people who communicate well, show up when they say they will, and genuinely take the time to answer your questions. Thank you, Taylor, for making the process so easy. I’m very happy with the experience and would definitely recommend Taylor and Critter Control!
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Diana Onas profile picture
Diana Onas
10 September 2026
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I had a appointment with Moises today to investigate noises that I had been hearing in my wall. I explained what I had been hearing and for how long, and he said that he was going to look for any potential entry points. He found two areas that were compromised and showed me pictures of the areas, and told me what he thought was the culprit and also explained the plan to make sure that there weren't any other rodents in the wall by putting in a one way door and then after 5 days, they would sanitize the area in the wall and seal up the two areas, so that nothing else could get inside. He was very professional and friendly and explained everything to me that they were going to do to alleviate the situation. I would definitely recommend Moises and Critter Control for any wildlife removal services in the future.
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Jacob Hanson
10 September 2026
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Evan the owner was very helpful! He was very responsive and knowledgeable for our bat issue. Couldn’t be happier!
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