Squirrel Control Colorado: Expert Removal & Prevention

squirrels may look cute in the park, but when they take up residence in your attic, they become a serious problem. In Colorado, the two most common nuisance species are the eastern fox squirrel (Front Range urban areas) and the pine squirrel (mountain communities). Both can squeeze through a hole the size of a golf ball, gnaw through electrical wiring, and create nests that attract secondary pests like fleas and mites. Their constant gnawing—driven by ever-growing incisors—can lead to short circuits, attic fires, and structural damage that costs thousands to repair. This guide covers everything you need to know about squirrel control in Colorado: how to spot an infestation, humane removal options, costs, and long-term prevention.

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Quick answer

In Colorado, squirrel control means dealing with both tree squirrels like fox and eastern gray in urban areas and ground squirrels on rural properties. Removal is typically done with one-way doors or trapping, followed by sealing entry points. Because most species have two litters a year, timing is critical. We can match you with a licensed Colorado squirrel control company.

Key Takeaways

  • →squirrels enter attics through gaps as small as 1.5 inches; they breed twice yearly (late winter/spring and late summer/fall).
  • →Gnawing on wires and wood creates a fire hazard; prompt removal is critical.
  • →One-way exclusion doors are the standard humane method; never seal squirrels inside.
  • →Colorado's Front Range and mountain towns see peak activity during breeding seasons and winter preparation.
  • →Professional exclusion and repair typically cost $250-$1500; inspection and quote terms vary by provider.
  • →Research: Two hundred to $600 is the estimated cost of squirrel trapping in Fixr's January 2025 U.S. cost guide, a publisher benchmark rather than an observed customer bill, so quotes in your area may land outside that range.
Eastern gray squirrel, Sciurus carolinensis
Squirrel leaf nest, or drey, in a tree

Who This Is For

This guide is written for Colorado homeowners, property managers, and landlords who suspect or have confirmed a squirrel infestation in their attic, crawlspace, or outbuilding. Whether you live in a Denver suburb, a mountain cabin near Breckenridge, or a ranch on the Eastern Plains, the principles are the same—but regional differences matter. If you need fast, professional help, Squirrel Removal offers statewide service with written warranty terms that vary by provider. Call +1 888 546 7983 for a inspection terms that vary by provider.

54%
NE Illinois homeowners with wildlife problems in prior year (INHS, 2013)
Source: Illinois Natural History Survey: homeowners and wildlife
51.8%
Wildlife-affected NE Illinois households: digging/burrowing (INHS, 2013)
Source: Illinois Natural History Survey: homeowners and wildlife
42%
U.S. homeowners who paid for professional pest control (Forbes Home, 2024)
Source: Forbes Home pest-control sentiment survey
Two, with 1-8 pups each
Gray squirrel litters per year
Source: Penn State Extension
Mid-December or early January, and again in June
Gray squirrel breeding periods
Source: Penn State Extension
5: fox, eastern gray, red, southern flying, northern flying
Tree squirrel species in Pennsylvania
Source: Penn State Extension
Western gray squirrel is threatened in Washington
Western native tree squirrel status
Source: Washington Department of Fish and Wildlife

The Problem

squirrels are rodents of opportunity. In Colorado, they exploit the transition between seasons to find shelter. During their two breeding seasons—late winter/spring (February–April) and late summer/fall (August–October)—females seek warm, dry places to raise their young. Attics, soffits, and wall voids offer perfect nesting sites. Once inside, they build nests from insulation, leaves, and debris, and they chew constantly to keep their incisors worn down. This chewing damages roof timbers, drywall, and—most dangerously—electrical cables. The National Fire Protection Association (NFPA) estimates that rodents cause 20-25% of undetermined electrical fires in structures; squirrels are a leading culprit. Additionally, their urine and droppings contaminate insulation, posing health risks from leptospirosis and salmonella. In Colorado, the problem is compounded by the state's varied climate: mountain areas see heavy snow that drives squirrels lower into homes, while Front Range suburbs offer abundant oak and pine trees that provide easy roof access.

Warning Signs

  • •Scratching, scurrying, or thumping sounds in the attic, especially at dawn and dusk.
  • •Visible entry holes: gaps around roof edges, soffits, vents, or eaves (often 1.5-3 inches).
  • •Droppings: small, dark, oblong pellets (similar to rat droppings but slightly larger).
  • •Nesting materials: shredded insulation, leaves, twigs, or paper in the attic.
  • •Gnaw marks on wood, wires, or plastic pipes; chewed electrical cables are a fire risk.
  • •Foul odors from urine and feces accumulation, especially in warm weather.
  • •Sightings of squirrels entering or exiting your roofline, or active feeding on bird feeders near the house.

Risks of Waiting

  • ⚠Electrical fires: chewed wires can short-circuit; squirrels cause an estimated 20-25% of undetermined structure fires (NFPA).
  • ⚠Structural damage: gnawing on rafters, joists, and support beams weakens your home's framework.
  • ⚠Health hazards: squirrel droppings and urine can carry leptospirosis, tularemia, and salmonella; dried droppings become airborne and can be inhaled.
  • ⚠Secondary pests: fleas, mites, and ticks from squirrels can infest your home; nests attract cockroaches and beetles.
  • ⚠Cost escalation: a small hole that costs $200 to seal can become a $2,000 repair if squirrels chew through wiring and insulation over several months.
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Do you have a squirrel problem?

Treatment Options

One-way doors

Quoted after inspection

A device that lets squirrels exit but not re-enter. Best when the squirrel is inside and you want to avoid trapping it. Must be installed by a professional who can find all entry points.

1-2 weeksBest: Tree squirrels in attics, when you are sure all young are mobile.

Cage trapping

Quoted after inspection

Live traps baited with nuts or peanut butter. Works for both tree and ground squirrels. Requires checking traps daily and handling release or euthanasia as allowed by law.

Days to weeksBest: Ground squirrels and when removal is straightforward.

Exclusion and repair

Quoted after inspection

After removal, all entry points are sealed with metal flashing, hardware cloth, or caulk. This prevents future infestations and is the most important step.

1-2 daysBest: Preventing re-entry after any squirrel removal.

Habitat modification

Varies

Trimming tree branches away from the roof, removing bird feeders that attract squirrels, and securing trash cans. Reduces the likelihood of squirrels targeting your home.

OngoingBest: Long-term prevention.
Squirrel on a rooftop
Eastern chipmunk, Tamias striatus

Squirrel Species You'll Meet in Colorado

Colorado sits at a crossroads of squirrel species. In the Front Range cities, you're almost certain to see the eastern gray squirrel, a non-native that was introduced and has thrived. It's the classic attic invader, chewing through vents and fascia. The fox squirrel, also non-native, is bulkier and often more aggressive. In the mountains and western slope, you might encounter the native western gray squirrel, which is protected in some states, and the smaller red squirrel. The Abert's squirrel is a tassel-eared native found in ponderosa pine forests. Ground squirrels, such as the Richardson's ground squirrel on the plains and the rock squirrel in rocky areas, are the ones that dig burrows and can cause structural damage. Correctly identifying the species is not just a curiosity; it determines what you can legally do. Introduced species are often unclassified pests, while native ones may have protections. A local professional can help you tell them apart.

A Month-by-Month Timeline for Colorado Squirrel Activity

Colorado's squirrel season runs on a rhythm set by the cold and dry climate. In January and February, gray squirrels are mating, and you may hear chasing noises on your roof. By March, the first litter is born, so if you plan exclusion work, do it before then. From April to June, young squirrels are leaving the nest, and you may see more activity as they establish territories. In July, the second breeding period begins. August and September see the second litter, and squirrels are busy caching food for winter, which can mean more chewing on decks and siding. As the temperature drops in October and November, they start seeking warm shelter, making attics prime targets. December is a quiet time, but squirrels that have already moved in are causing damage. If you hear scratching in the attic during a Colorado winter, it's a good chance a squirrel has set up shop. Year-round prevention is key, but fall is the most critical time to seal your home. Summer highs near 88F across our Colorado city data heat an attic well past the outside temperature, so a July nest of young turns into a heat and odor problem within days of anyone noticing it.

What the First Visit Looks Like from a squirrel Control Pro

When you call a licensed Colorado wildlife control company, the first visit is an inspection. They'll walk the exterior of your home, looking for entry points along the roofline, soffits, and vents. They may use a ladder to get a closer look, and they'll check the attic for signs of nesting, droppings, and damage. They'll ask questions about when you hear noises and how long it's been going on. Based on what they find, they'll explain your options. If there are young, they may recommend waiting a few weeks until the young can leave on their own. If it's a simple case of a single squirrel, they may set a one-way door. You should expect a written plan that includes removal, exclusion, and any repairs. Ask about the timeline and cost before they start. A good inspector will also point out potential entry points that haven't been breached yet but could be in the future.

What Affects the Price in Colorado Homes

Squirrel removal costs in Colorado can vary widely, and several factors are at play. The first is the size and complexity of your home. A two-story house with a steep roof is harder to access, so labor costs are higher. The number of entry points matters; a single hole is cheaper to seal than a dozen. The extent of damage also affects price. If squirrels have chewed wiring, that requires an electrician. If they've soiled insulation, it may need to be replaced. Colorado's median home value is about $530,000, and many homes have attics with blown-in insulation, which complicates cleanup. The local cost of living in cities like Denver and Boulder drives higher service rates than in rural areas. Finally, the season can affect price. If you wait until winter, when squirrels are nesting, you may need multiple visits to wait for young to leave, increasing the total cost. Roughly 16 inches of rain a year leaves fascia and trim wood dry and shrunken in much of Colorado, and the extra carpentry that shows up once a technician pulls a chewed board is a common reason a quote climbs after the walkthrough.

Renters, Landlords, and Who Pays for Squirrel Damage

In Colorado, the responsibility for squirrel control often falls on the property owner. If you're a renter and you discover squirrels in your attic or walls, you should notify your landlord immediately. The landlord is typically responsible for maintaining a habitable home, and squirrel infestation can be considered a health and safety issue. However, if the renter caused the problem by, say, leaving food out that attracted squirrels, the renter may be liable. For landlords, it's wise to have a regular inspection plan and to respond quickly to tenant reports. Squirrel damage can escalate, and the longer you wait, the more it costs. In rental properties, the cost of removal and repairs can be deducted as a business expense, but it's best to act promptly. If you're a tenant and your landlord is unresponsive, contact your local housing authority for guidance.

Prevention for Colorado Homes with Attics and Crawl Spaces

Prevention is the most cost-effective strategy. In Colorado, the dry climate and extreme temperatures cause wood to shrink and expand, creating gaps that squirrels can exploit. Start by inspecting your roofline, fascia, and soffits for any holes or weak spots. Use metal flashing or hardware cloth to cover any opening larger than a quarter inch. Pay special attention to the corners where rooflines meet, and around vents and chimneys. Install a chimney cap. Trim tree branches that overhang your roof, as squirrels use them as highways. If you have a crawl space, ensure vents are covered with wire mesh. In mountain towns, check the foundation for cracks, as ground squirrels can dig under. Keep your yard free of food sources like fallen nuts, birdseed, and pet food. By making your home a fortress, you'll avoid the headache of a squirrel invasion.

When It's an Emergency: Squirrel in the Living Space

Sometimes a squirrel gets past the attic and into your living space. This is an emergency. a squirrel can cause chaos, knocking over items, chewing through wires, and even biting if cornered. If you find a squirrel in your living room, close the door to the room and open a window or exterior door to give it an escape route. Leave the room and give it time to leave on its own. Do not try to catch it with your hands; they have sharp teeth and claws. If it doesn't leave, call a wildlife control professional immediately. They have the tools and training to safely remove the squirrel. In the meantime, keep children and pets away from the room. Once the squirrel is out, inspect your home for how it got in and seal that entry point. This kind of event is rare, but it's a clear sign that your exclusion measures need an upgrade.

Squirrel Control Methods Comparison

MethodCost RangeDurationBest For
One-Way Exclusion$250-$5001-2 weeksActive attic infestations
Live Trapping$300-$6001-2 weeksOutdoor nuisance squirrels
Full Exclusion & Repair$800-$15001-3 days (sealing); repair variesMultiple entry points, significant damage

What Affects Cost

  • ✓Location: urban Front Range (Denver, Colorado Springs) vs. mountain towns (Aspen, Vail) affect labor rates.
  • ✓Severity of infestation: number of squirrels and duration of activity.
  • ✓Number of entry points: more holes mean more time and materials for sealing.
  • ✓Accessibility: steep roofs, high eaves, or tight crawlspaces increase labor time.
  • ✓Damage repair: replacing chewed wiring or insulation adds cost.
  • ✓Time of year: breeding seasons may require careful timing to avoid orphaned young.
  • ✓Service guarantees: companies offering follow-up warranties may charge more upfront.
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What is your biggest concern about squirrels in your home?

When to Call a Professional

If you hear scratching sounds in your attic, see squirrels entering your roofline, or find droppings and nesting material, call a professional immediately. squirrels can reproduce quickly—a single female can have two litters per year with 2-4 young each. DIY exclusion often fails because squirrels chew through caulk or foam. A professional inspection identifies all entry points and ensures humane, legal removal. In Colorado, it is illegal to kill squirrels without a permit, and relocation rules vary by county. Call Squirrel Removal at +1 888 546 7983 for a inspection terms that vary by provider and same-day service.

DIY vs Professional

DIY squirrel control typically involves sealing obvious holes with steel wool or foam and setting traps. While tempting, this approach often backfires: sealing a hole while squirrels are inside traps them, leading to death, odors, and secondary pests. Professionals use one-way exclusion doors that allow squirrels to leave but not return. They also identify hidden entry points—like gaps behind siding or uncapped chimneys—that homeowners miss. The cost of a professional exclusion ($250-$1500) is far less than repairing fire damage or structural rot. For simple perimeter sealing of minor gaps on a single-story home, DIY may work, but for any attic infestation, professional help is strongly recommended.

Local Context

Colorado’s squirrel control landscape varies by region. In the Denver metro area, fox squirrels are abundant in older neighborhoods with mature oak and maple trees. Common entry points include gaps where roofing meets siding, uncapped chimneys, and damaged soffits. The Colorado Springs area sees similar issues, but with more pine squirrels in the foothills. In mountain communities like Aspen, Vail, and Breckenridge, red squirrels are the primary nuisance, often entering cabins through gaps in log construction or uncapped vents. These squirrels are particularly active during fall, caching pine cones inside walls and attics. On the Western Slope, towns like Grand Junction and Durango have a mix of species, with fox squirrels in riparian areas and rock squirrels in canyon habitats. Rock squirrels are larger and more likely to burrow under foundations. Regardless of location, the key is year-round vigilance: inspect your home during each seasonal transition. Squirrel Removal covers the entire state, with technicians familiar with local wildlife regulations and building styles. Call +1 888 546 7983 for a inspection terms that vary by provider tailored to your area.

Prevention Tips

  • ✓Trim tree branches that are within 6 to 8 feet of your roofline.
  • ✓Install chimney caps and cover attic vents with hardware cloth.
  • ✓Inspect your roofline and fascia for gaps in the fall, before Colorado's cold winter sets in.
  • ✓Use metal flashing to seal any holes larger than a quarter.
  • ✓Keep bird feeders and pet food indoors or in squirrel-proof containers.
  • ✓Store firewood away from the house, as it can provide nesting sites.
  • ✓In mountain towns, ensure crawl spaces and under-deck areas are sealed.
  • ✓Remove food sources like fallen nuts and berries from your yard.

💡 Did You Know?

  • ★squirrels perform elaborate fake-burying rituals: they dig a hole, pretend to drop a nut, cover it up, and then scamper off with the real nut hidden in their mouth to fool watching thieves.
  • ★squirrels can rotate their hind ankles 180 degrees, allowing them to climb down trees headfirst — a skill that also helps them navigate rooftops and gutters.

Frequently Asked Questions

What is the best way to get a squirrel out of my attic?
The best method is one-way exclusion: install a wire or plastic door over the main entry so the squirrel can leave but not re-enter. Do not seal the hole until you are sure all squirrels are out (typically 3-7 days). Never seal a squirrel inside, as it will die and cause odor and insect problems.
How much does squirrel removal cost in Colorado?
Professional squirrel removal typically costs $250-$500 for exclusion alone. Full exclusion and repair (including sealing all entry points and fixing damage) ranges from $250 to $1500, depending on the number of entry points and extent of damage. inspection and quote terms vary by provider.
Can I just block the hole I see squirrels using?
No. If you block the only entry while a squirrel is inside, it will either die or chew a new exit, causing more damage. Always use one-way exclusion first, then seal after all squirrels have left.
Are squirrels dangerous? Do they carry diseases?
Yes, squirrels can carry diseases such as leptospirosis, tularemia, and salmonella, transmitted through urine and droppings. They also bring fleas, ticks, and mites into your home. Their gnawing on electrical wires creates a fire hazard.
When do squirrels have babies in Colorado?
squirrels have two breeding seasons in Colorado: late winter (February–April) and late summer (August–October). Gestation is about 44 days, so babies are born in March–May and September–November. Avoid exclusion when young are present; wait until they are old enough to leave the nest (about 6–8 weeks).
How can I prevent squirrels from getting into my attic?
Trim tree branches at least 8 feet from your roof, install chimney caps and vent covers, seal all gaps larger than 1/4 inch with metal mesh or copper wool, and remove bird feeders or use baffles. Inspect your roofline twice a year, especially before breeding seasons.
Is it legal to trap and relocate squirrels in Colorado?
Yes, you can trap nuisance squirrels on your property without a permit, but you must release them at least 5 miles away in suitable habitat. Do not release on public land without permission. Lethal trapping is only allowed during open season (typically August–February) with a valid hunting license. Check with Colorado Parks and Wildlife for local restrictions.
Will homeowners insurance cover squirrel damage?
Most standard homeowners policies exclude rodent damage, including squirrels. However, some policies may cover fire damage if a squirrel chews wires and causes a fire. Check your policy or call your agent. Prevention is always cheaper than repair.
What does a squirrel exclusion door cost?
Fixr's January 2025 U.S. cost guide estimates a one-way squirrel exclusion door at $200 to $600, about the same as trapping. A one-way door lets squirrels exit but blocks re-entry, avoiding the need to handle animals. The figure is a publisher estimate, not an observed bill, and local prices vary. Make sure any quote also covers sealing other gaps once the animals are out, or the door only moves the problem to the next opening.
How much does it cost to remove a dead squirrel from a wall or attic?
Fixr's January 2025 U.S. cost guide estimates dead-squirrel removal at $100 to $250. That is a publisher estimate, not an observed customer bill, and local quotes vary, especially if the animal is inside a wall and drywall has to be opened. The smell usually peaks within a week or two and fades over several weeks. When you call, ask whether the price includes locating the carcass, disposal and deodorizing, since those are sometimes billed separately.

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Content provenance and service transparency

Statistics on this page come from named public surveys, studies and published cost guides, cited inline with their dates and populations; they are not this site's own customer data and do not describe any specific property. Content was drafted with an editorial pipeline and reviewed on September 11, 2026 for source fidelity, claim wording and local relevance. Provider availability, pricing, credentials and service terms must be confirmed directly.

Published by Squirrel Exterminator ¡ No named licensed-professional review is claimed ¡ Updated 2026-09-11T20:15:34.506Z

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