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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Squirrel infestations in New Hampshire homes are best handled through a combination of one-way exclusion doors, sealing entry points (as small as 1.5 inches), and repairing gnawed wiring. Professional removal costs $250-$500, with exclusion and repair ranging from $250-$1500. Call 888-546-7983 for a inspection terms that vary by provider.
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.
A one-way exclusion door allows squirrels to exit but prevents re-entry, a humane and effective method.
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.
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
- ⚠Fire hazard: Chewed electrical wires can short-circuit and ignite insulation or wood framing.
- ⚠Structural damage: squirrels weaken roof sheathing, rafters, and support beams by gnawing and nesting.
- ⚠Health risks: Squirrel droppings and urine can carry leptospirosis, salmonella, and attract fleas or mites.
- ⚠Secondary infestations: Open entry points invite bats, birds, raccoons, or insects.
- ⚠Increased repair costs: The longer you wait, the more extensive damage becomes—often doubling or tripling initial estimates.
Do you have a squirrel problem?
Treatment Options
One-Way Exclusion Doors
$250-$500A humane device installed over the main entry hole that allows squirrels to exit but prevents re-entry. Typically left in place for 1-2 weeks to ensure all animals, including young, have left.
Full Exclusion & Repair
$500-$1500Comprehensive sealing of all potential entry points (gaps, vents, chimneys, soffits) with heavy-gauge mesh, flashing, or caulk. Includes repair of damaged wood, insulation replacement, and wire protection.
Trapping & Removal
$150-$400 per squirrel (typically included in full service)Live traps baited with peanut butter or nuts, placed in attics or on roofs. Trapped squirrels are relocated (where legal) or euthanized per state regulations. Not recommended as sole method because it doesn't prevent future entry.
The Two Breeding Seasons and Why They Matter
New Hampshire's gray squirrels (Sciurus carolinensis) have two distinct breeding periods: a primary season from February through April and a secondary season from August through October. Pregnant females seek safe, warm places to give birth—your attic fits the bill. A single litter can contain 2-4 young, which become mobile after 7-10 weeks. If you exclude adults during breeding season without accounting for young, you risk separating mothers from babies, leading to death and odor issues. Professional exclusion doors are designed to allow all animals, including young, to leave safely. After the door is installed, technicians monitor the site to ensure no animals are trapped. Timing is critical: if you seal the attic in late winter, you might trap a nursing mother. That's why inspection terms that vary by provider from Squirrel Removal include an assessment of reproductive status and appropriate timing.
Squirrel-Proofing Your New Hampshire Home: A Regional Approach
New Hampshire's varied climate—from humid summers in the south to harsh winters in the north—affects how squirrels behave. In the Lakes Region and White Mountains, snow cover can drive squirrels into attics earlier (late September). On the Seacoast, milder winters may delay invasion until November. Regardless, the prevention principles are the same: seal all gaps larger than 1/4 inch, use metal flashing at roof edges, and install vent covers. Materials matter: In areas with heavy snow and ice, plastic vents can crack; heavy-gauge galvanized steel is recommended. For older homes in Portsmouth or Exeter, where historic architecture has many nooks, a professional inspection is essential. Chimney caps are especially important in the Monadnock Region, where wood-burning fireplaces are common.
Health and Safety: What squirrels Leave Behind
Squirrel droppings and urine can harbor leptospirosis bacteria, which can cause flu-like symptoms in humans. Disturbing dried droppings can release airborne particles that may carry salmonella or hantavirus (rare in New England but possible). Additionally, squirrel nests often harbor fleas, mites, and ticks, which can infest your home. If you find a dead squirrel in your attic, it can attract carpet beetles and produce a strong odor. Professional cleanup involves HEPA vacuuming, disinfecting, and replacing contaminated insulation. Never sweep dry droppings—use a wet mop or spray with disinfectant first. Squirrel Removal includes sanitation services with all exclusion jobs to ensure your attic is safe.
How New Hampshire Properties Should Prepare for squirrel Service
Before a professional visit in New Hampshire, clear access to baseboards, utility areas, kitchens, bathrooms, garages, crawl spaces, and any location where activity has been seen. Take photos of sightings, save damaged materials when safe, and note when the problem is most active. This helps the technician confirm the species, find nesting or entry points, and choose a treatment plan that matches the property instead of relying on a generic spray-and-leave visit.
Questions to Ask Before Booking squirrel Control
Ask whether the inspection is included, what treatment methods are being proposed, how follow-up visits are handled, and what conditions could change the price. For rental properties, restaurants, hotels, warehouses, and multi-unit buildings, ask whether documentation is provided after service. Strong providers explain the source of the problem, the treatment area, safety instructions, and prevention steps in plain language before work begins.
What Makes New Hampshire squirrel Problems Different
New Hampshire properties can have different pest pressure from block to block because of building age, landscaping, moisture, trash handling, nearby food sources, and how tightly entry points are sealed. A good inspection does not assume every property needs the same service. It checks the structure, surrounding conditions, activity level, and safety needs before recommending treatment.
Inspection Steps for squirrel Issues
A complete inspection should look at interior activity, exterior entry points, moisture conditions, food or harborage sources, nearby vegetation, storage areas, and any connected units or shared walls. The best inspection notes where activity is confirmed, where it is suspected, and what needs to change after treatment so the same issue does not return quickly.
Follow-Up and Prevention Plan
Professional pest control should not stop at one visit when the infestation risk is ongoing. Follow-up timing depends on the pest, severity, season, property type, and whether sanitation or exclusion work is still needed. A practical prevention plan may include sealing entry points, improving drainage, trimming vegetation, changing storage habits, and monitoring activity after service.
DIY vs. Professional Squirrel Control
| Factor | DIY | Professional |
|---|---|---|
| Cost | $20-$100 for materials | $250-$1,500 for full exclusion |
| Time | Hours to days, plus monitoring | 1-3 days for sealing; monitoring included |
| Effectiveness | Often misses secondary entry points | Comprehensive seal with warranty |
| Safety | Risk of falls, electrical shock, or disease exposure | Trained, insured, uses proper PPE |
| Humane outcome | May trap young or cause stress | One-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, our technicians 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 at least 10 feet away from your roofline to deny squirrels easy access.
- ✓Install chimney caps and cover attic vents with 1/4-inch hardware cloth.
- ✓Seal gaps around utility lines, pipes, and cables entering the house with steel wool or caulk.
- ✓Inspect soffits and fascia annually for loose boards or holes; repair promptly.
- ✓Remove bird feeders from near the house or use squirrel-proof models; spilled seed attracts squirrels.
- ✓Store firewood at least 20 feet from the house and off the ground to reduce nesting sites.
- ✓Check for signs of chewing on roof edges, shingles, or vents each season.
💡 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?
Can squirrels cause a fire?
What is the best way to get rid of squirrels humanely?
How much does professional squirrel removal cost in New Hampshire?
When is squirrel season in New Hampshire?
Can I just trap and relocate squirrels?
How small a hole can a squirrel fit through?
What should I do if I find baby squirrels in my attic?
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