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Squirrel Control in New Hampshire: A Complete Guide for Homeowners

If you hear scratching, scurrying, or gnawing in your attic, you may have squirrels. These agile rodents are common across New Hampshire, from the Seacoast to the White Mountains, and they're not just a nuisance—they can cause significant damage. squirrels chew on wires, tear insulation, and create entry points for other pests. Understanding their behavior and acting quickly can save you hundreds in repairs. This guide covers everything you need to know about squirrel control in New Hampshire: how to spot an infestation, why you shouldn't wait, and how to get rid of them humanely and permanently. Whether you're a homeowner in Manchester or a landlord in Concord, the information here is grounded in local expertise and real-world experience.

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Quick answer

Squirrel control in New Hampshire means dealing with gray squirrels, red squirrels, and flying squirrels that enter attics and chew on homes. Professional removal involves inspection, one-way doors or trapping, and sealing entry points. Act quickly to prevent damage, especially during breeding seasons in late winter and mid-summer.

Key Takeaways

  • squirrels enter attics through gaps as small as 1.5 inches, especially during breeding seasons in late winter/spring and late summer/fall.
  • One-way exclusion doors are the standard humane removal method, allowing squirrels to leave but not re-enter.
  • Gnawing on wood and wiring creates fire hazards; prompt action is crucial.
  • DIY exclusion is possible for minor issues, but professional service ensures thorough sealing and prevention.
  • New Hampshire's climate drives two peak invasion periods: pre-winter and during spring/summer breeding.
  • Research: In the 2022 wildlife-perceptions survey by Puri and colleagues (1,006 residents of a southeastern U.S. metro area, published in People and Nature in 2024), 15.2% of respondents with squirrels or chipmunks nearby preferred a small decrease, an attitude measure and not an infestation finding.
Eastern chipmunk, Tamias striatus
Squirrel in a live cage trap

Who This Is For

This guide is for homeowners, property managers, and landlords in New Hampshire who are dealing with or want to prevent squirrel invasions. If you've heard strange noises in your attic, found droppings in your garage, or noticed chew marks on your roofline, you're in the right place. We focus on practical, humane solutions that work for New England's unique climate and squirrel species—primarily gray squirrels and red squirrels.

$200–$600
Squirrel trapping, U.S. publisher estimate (Fixr, Jan 2025)
Source: Fixr squirrel removal costs
54%
NE Illinois homeowners with wildlife problems in prior year (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
Gray squirrel litters per year
Source: Penn State Extension
Mid-December/early January and June
Gray squirrel breeding periods
Source: Penn State Extension
5
Tree squirrel species in eastern US
Source: Penn State Extension
Threatened
Western gray squirrel status in Washington
Source: Washington Department of Fish & Wildlife

The Problem

squirrels are not just cute backyard visitors; they are destructive pests once they enter your home. Their incisors grow continuously, so they gnaw constantly to keep them trimmed. This means chewing through wood, drywall, and electrical wiring, which can spark fires. According to the National Pest Management Association, rodents (including squirrels) cause an estimated 20% of undetermined house fires in the U.S. each year. In New Hampshire, the two breeding seasons—late winter/spring (February–April) and late summer/fall (August–October)—are when squirrels are most likely to seek shelter in attics. They can squeeze through holes as small as 1.5 inches, so even a small gap around a vent or soffit is an open door. Once inside, they build nests, store food, and raise young, creating a persistent problem that worsens with time.

Warning Signs

  • Scratching, scurrying, or thumping sounds in the attic, especially at dawn and dusk.
  • Droppings that are oblong, about 3/8 inch long, often near entry points or in insulation.
  • Gnaw marks on wood, wires, or plastic pipes; look for paired grooves from their incisors.
  • Visible entry holes in soffits, fascia, or roof edges, often with greasy rub marks around them.
  • Nests made of leaves, twigs, and insulation in attic corners or vents.
  • Squirrel tracks or footprints in dusty attic spaces; four toes on front feet, five on back.
  • Strange odors from urine and feces, which can also attract other pests.

Risks of Waiting

  • Chewed electrical wires can cause house fires.
  • Insulation damage reduces energy efficiency and raises heating bills.
  • Entry holes allow water and other pests inside.
  • squirrels can bring fleas, ticks, and mites into your home.
  • A mother squirrel may give birth, increasing the infestation size.
  • Structural wood damage can be expensive to repair.

Do you have a squirrel problem?

Treatment Options

One-way doors

Quoted after inspection

A device that lets squirrels exit but not re-enter. Installed over entry points, it's effective for evicting animals without trapping them inside. Best for active infestations with a clear entry.

Typically 1-2 weeks, depending on the number of squirrels.Best: Active infestations with a single or few entry points.

Cage trapping

Quoted after inspection

Live traps baited with nuts or peanut butter, placed near entry points or runways. This method requires checking traps frequently and handling the captured animal legally, which may require a permit.

Varies, often 1-3 weeks.Best: Situations where one-way doors are not practical or legal.

Exclusion and repair

Quoted after inspection

Sealing all potential entry points with heavy-gauge wire mesh, metal flashing, or caulk. This is the long-term solution that prevents future intrusions. Often combined with removal.

Usually done in one visit, but may require follow-up.Best: Preventing re-entry after squirrels are removed.

Professional removal and prevention package

Quoted after inspection

A thorough service that includes inspection, removal of all squirrels, cleanup of droppings and insulation, and sealing entry points. This is the most thorough approach and is recommended for severe infestations.

Several days to weeks, depending on extent.Best: Severe infestations or when DIY methods have failed.
American red squirrel, Tamiasciurus hudsonicus
Squirrel raiding a backyard bird feeder

Squirrel Species You'll Meet in New Hampshire

New Hampshire has four main tree squirrel species: eastern gray, red, northern flying, and southern flying. The eastern gray is the most common and the one most often found in attics. They are active during the day and can cause substantial damage if they get inside. Red squirrels are smaller and more aggressive, often entering homes in search of food. Flying squirrels are nocturnal and social, and a single attic may host a dozen or more. They are often mistaken for mice because of their size, but their gliding ability and tail shape are distinctive. Naming the species first saves you money, because each one answers to a different eviction method. Cage traps set on the roof work well on grays. Flying squirrels come out in numbers after dark, so one-way doors on the main hole usually clear a colony faster. Reds will gnaw fresh wood and new mesh, so repairs after a red squirrel need metal, not caulk.

A Month-by-Month Timeline for Squirrel Activity

In New Hampshire, squirrel activity peaks in late winter and mid-summer when litters are born. Gray squirrels breed in mid-December or early January, with births about 44 days later, so you may hear babies in February. A second litter is born in June, and you might hear them in July. During these times, mothers are protective and removal must be done carefully to avoid separating them from their young. Across the 12 cities in our New Hampshire data, summer highs sit near 82F, warm enough that mid-summer litters grow fast and leave the nest before Labor Day. In the fall, squirrels are busy gathering food and may cause damage to bird feeders and gardens. They also look for warm places to spend the winter, so October and November are prime times for attic invasions. If you seal entry points in the fall, you can prevent winter guests. Walking the roofline twice a year, once after mud season and once before the first hard frost, catches the small gaps while they are still small.

What the First Visit from a Professional Looks Like

When you call a professional squirrel control company in New Hampshire, the first step is a thorough inspection. Expect someone on a ladder working the whole perimeter: drip edge, fascia returns, soffit seams, gable and ridge vents, and the spots where a dormer meets the main roof. They'll also look inside your attic for signs of nesting, droppings, and damage. After identifying the entry points, they will discuss a removal plan with you. Typically, they will set up one-way doors or traps, depending on the situation. They may also recommend sealing other potential entry points to prevent future problems. The cost of the inspection may be rolled into the removal service or charged separately. Always ask about what is included in the quote and whether the inspection fee is applied to the treatment cost.

What Affects the Price in New Hampshire Homes

Several factors influence the cost of squirrel removal in New Hampshire. The number of squirrels and whether there are babies is a major factor. The accessibility of entry points also matters; a simple gap in a soffit may be cheaper to fix than a complex roofline issue. Damage found during the walkthrough is its own line item, and torn blown-in insulation over a New Hampshire attic floor costs more to replace than the removal itself. If cleanup and decontamination are needed, the price will rise. Your location within the state affects labor rates, with more urban areas like Manchester and Nashua possibly having higher costs. The age and construction of your home also play a role. Older homes may have more entry points and require more extensive exclusion work. To get a fair price, request quotes from at least three companies and compare what each includes.

Renters, Landlords, and Who Pays

If you rent a home in New Hampshire and discover squirrels, you should notify your landlord immediately. In most cases, the landlord is responsible for pest control and structural repairs, but you may be responsible for reporting the issue promptly. The lease should specify who handles wildlife problems, but generally, it is the landlord's duty to maintain a habitable property. Landlords should address squirrel issues quickly to prevent further damage and potential liability. Hiring a professional wildlife control service is often the best course. If you own a rental property, consider scheduling annual inspections to catch entry points before they become a problem. The cost of removal and repairs can be deducted as a business expense, so keep records.

Prevention for New Hampshire's Older Homes

Many homes in New Hampshire were built before 1980, and older homes often have gaps that squirrels can squeeze through. a squirrel can fit through an opening as small as one and a half inches, so even small cracks matter. Inspect your roofline, especially around fascia boards and soffits, for signs of wear. Replace rotted wood and seal gaps with metal flashing or wire mesh. Pay attention to areas where utility lines enter your home, as squirrels can use these as a pathway. Install chimney caps and cover vents with heavy-duty mesh. Trim tree branches that overhang your roof. By making your home less accessible, you can avoid the hassle and expense of an infestation.

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

Occasionally, a squirrel may find its way into your living area, not just the attic. This can happen through an open door or chimney. If a squirrel is inside your home, it may panic and become aggressive. Do not attempt to handle it with bare hands. Open doors and windows to give it an escape route, and leave the room. Contact a professional if it does not leave on its own. This situation is more urgent because the squirrel could cause damage or injure pets. If the squirrel is in a wall or fireplace, do not light a fire. A professional can safely remove it. While rare, these emergencies require immediate attention to prevent harm.

DIY vs. Professional Squirrel Control

FactorDIYProfessional
Cost$20-$100 for materials$250-$1,500 for full exclusion
TimeHours to days, plus monitoring1-3 days for sealing; monitoring included
EffectivenessOften misses secondary entry pointsComprehensive seal with warranty
SafetyRisk of falls, electrical shock, or disease exposureTrained, insured, uses proper PPE
Humane outcomeMay trap young or cause stressOne-way doors ensure safe exit for all

What Affects Cost

  • Number of entry points: More holes mean more materials and labor.
  • Roof pitch and accessibility: Steep or high roofs require special equipment and increase cost.
  • Severity of damage: Replacing chewed wiring or soiled insulation adds to the bill.
  • Location in New Hampshire: Urban areas like Manchester may have higher labor rates than rural regions.
  • Time of year: Peak seasons (spring and fall) may have higher demand and slightly higher prices.
  • Type of squirrel: Red squirrels are smaller but can be more aggressive, sometimes requiring more effort.
  • Warranty or guarantee: Services with multi-year guarantees tend to cost more upfront but save money long-term.
📊

What is your biggest concern about squirrels in your home?

When to Call a Professional

If you hear persistent noises in your attic, see droppings or damage, or suspect a family of squirrels (including young), call a professional. DIY attempts often miss entry points or fail to exclude all animals. A pro from Squirrel Removal can perform a inspection terms that vary by provider, identify all vulnerabilities, and implement a humane exclusion plan. Call 888-546-7983 to schedule an appointment, especially during peak seasons when attics become nurseries.

DIY vs Professional

For minor issues—like a single squirrel that entered through an open vent—DIY exclusion is possible. You can install a one-way door (available at hardware stores) and seal the hole after a few days. But most homeowners underestimate how many entry points exist. squirrels can gnaw new holes if you seal the main one. Professional exclusion uses heavy-duty materials (galvanized steel mesh, copper wool) and includes a thorough inspection of rooflines, eaves, and chimney caps. Pros also handle repairs safely, avoiding electrical hazards. The average cost of professional exclusion is $250-$1500, which often includes a warranty. Considering that a single squirrel can cause thousands in damage, professional service is usually the better value.

Local Context

New Hampshire's squirrel control needs vary by region. In the Seacoast area (Portsmouth, Dover, Rochester), older homes with multiple eaves and vents are prime targets. The mild coastal climate means squirrels are active year-round, so prevention is a constant need. In the Merrimack Valley (Manchester, Nashua, Concord), suburban neighborhoods with mature trees see high squirrel traffic; bird feeders are a common attractant. In the Lakes Region and White Mountains, red squirrels are more prevalent—they are smaller but more aggressive gnawers. In northern Coos County, deep snow pushes squirrels into attics as early as October. Squirrel Removal operates statewide, providing inspection terms that vary by provider and tailored solutions for each region. Whether you're in Hanover or Portsmouth, matched independent providers understand local building styles and squirrel behavior. Call 888-546-7983 to connect with a local expert who can address your specific situation.

Prevention Tips

  • Trim tree branches that are within 8 feet of your roof.
  • Install metal flashing around the base of chimneys and vents.
  • Cover gable vents and attic fans with heavy-gauge wire mesh.
  • Inspect your roofline for gaps and cracks, especially after storms.
  • Keep garbage cans tightly sealed and do not leave pet food outside.
  • Use squirrel-proof bird feeders that catch seeds.
  • Seal gaps around utility lines and cables entering the house.
  • Consider installing chimney caps to prevent entry.

💡 Did You Know?

  • squirrels perform fake burials: they dig a hole, cover it, and pretend to bury a nut, then actually hide it elsewhere to fool thieves.
  • They can rotate their ankles 180 degrees, allowing them to climb down trees headfirst with ease.
  • a squirrel's front incisors never stop growing; they grow about 6 inches per year, but constant gnawing keeps them short.

Frequently Asked Questions

How do I know if I have squirrels in my attic?
Listen for scratching, scurrying, or thumping sounds, especially at dawn and dusk. Look for droppings, gnaw marks on wood or wires, and visible entry holes. A professional inspection can confirm the species and extent.
Can squirrels cause a fire?
Yes. squirrels frequently gnaw on electrical wiring, stripping insulation and exposing live wires. This can cause short circuits, sparks, and fires. The NFPA estimates rodents are involved in 20% of undetermined house fires.
What is the best way to get rid of squirrels humanely?
One-way exclusion doors are the standard humane method. They allow squirrels to leave but not re-enter. After a week or two, the door is removed and the hole sealed. This ensures no animals are trapped inside.
How much does professional squirrel removal cost in New Hampshire?
Removal alone typically ranges from $250 to $500. Full exclusion and repair can cost $250 to $1500, depending on the number of entry points and damage. Many companies offer inspection terms that vary by provider and warranties.
When is squirrel season in New Hampshire?
squirrels breed in late winter/spring (Feb–Apr) and late summer/fall (Aug–Oct). These are the peak times for attic invasions as females seek nesting sites. They also seek winter shelter in October–November.
Can I just trap and relocate squirrels?
Trapping alone is not recommended because it doesn't prevent others from entering. Also, relocation is often illegal or impractical in New Hampshire. Exclusion (sealing entry points) is the only permanent solution.
How small a hole can a squirrel fit through?
squirrels can squeeze through gaps as small as 1.5 inches. That's about the size of a golf ball. Inspect your roofline, soffits, and vents for any openings of that size or larger.
What should I do if I find baby squirrels in my attic?
Do not seal the attic if there are young present. Contact a professional who can install a one-way door that allows the mother to retrieve her young or wait until they are old enough to leave. Squirrel Removal can advise on the best course of action.
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.
Do people want squirrels removed from their neighborhood?
Mostly not. In Puri and colleagues' 2022 survey of 1,006 residents of a southeastern U.S. metro area, published in 2024, 63.5% of people who reported squirrels or chipmunks nearby wanted the population left unchanged, 15.2% wanted a small decrease and only 9.3% wanted a large one. The survey combined squirrels and chipmunks and asked about the neighborhood, not about animals inside homes. a squirrel in the attic is a different problem; the usual fix is exclusion and sealing the entry point.

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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 2026-09-11T20:15:35.047Z

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