New Hampshire Wildlife Control: Complete Guide to Removal & Exclusion
New Hampshire's diverse habitats—from the White Mountains to the Seacoast—support a rich array of wildlife. But when raccoons take up residence in your attic or squirrels nest in your chimney, that wildlife becomes a problem. Every year, Granite State homeowners face property damage, health risks, and sleepless nights from unwanted animal guests. Understanding what you're dealing with and when to call a pro can save you thousands and protect your home.
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Wildlife control in New Hampshire involves humane removal of nuisance animals like raccoons, squirrels, and bats, followed by exclusion sealing entry points. Costs range from $250 for simple removals to $2,500+ for full exclusion and restoration. Spring and fall are peak seasons. Call 888-546-7983 for a inspection terms that vary by provider.
Key Takeaways
- →Wildlife intrusions peak in spring (birthing season) and fall (seeking warmth).
- →Common NH nuisances: raccoons, squirrels, opossums, skunks, bats.
- →Humane exclusion is the only permanent solution; removal alone is temporary.
- →State regulations protect many species; professional handling is required.
- →Costs vary from $250–$600 for removal to $1,000+ for full exclusion and restoration.
Raccoons often enter attics through damaged vents or loose soffits. Professional removal ensures safety and compliance with state laws.
Who This Is For
This guide is for homeowners, property managers, and landlords in New Hampshire who are dealing with or want to prevent wildlife intrusions. Whether you're hearing scratching in the attic, finding droppings in the garage, or noticing chewed wires, this page covers identification, risks, costs, and solutions specific to NH conditions. We'll also help you navigate state regulations that require independent pest-control providers for many species.
The Problem
Nuisance wildlife in New Hampshire is not a one-size-fits-all issue. In rural areas like the North Country, black bears and porcupines may raid trash or damage structures. In suburbs around Manchester and Nashua, raccoons, squirrels, and skunks are the top offenders. In coastal regions, bats and chimney swifts are common. Regardless of location, attics and chimneys are the most frequent entry points, according to industry estimates. Once inside, animals cause damage: they gnaw on wires (a fire risk), contaminate insulation with urine and feces, and can carry diseases like rabies, leptospirosis, and histoplasmosis.
Warning Signs
- •Scratching, thumping, or squeaking sounds in walls, ceiling, or attic—especially at dawn or dusk.
- •Droppings in attic, basement, garage, or near entry points; raccoon droppings are large and often contain undigested seeds.
- •Chewed wood, wires, or plastic; squirrels and rodents have strong incisors that leave clean cuts.
- •Unusual pet behavior—dogs or cats fixating on a specific wall or ceiling area.
- •Foul odors from urine, feces, or decomposing animals (e.g., a trapped animal that died).
- •Visible damage to soffits, fascia, vents, or chimney caps; raccoons can pry off loose boards.
- •Tracks or rub marks on siding or roof edges; greasy smudges from raccoon paws.
Risks of Waiting
- ⚠Structural damage: gnawing can weaken beams, wires can short-circuit and cause fires.
- ⚠Health hazards: raccoon roundworm (Baylisascaris) spores can become airborne; bat guano can harbor histoplasmosis fungus.
- ⚠Secondary infestations: fleas, ticks, mites, and flies can spread from the animal to your living spaces.
- ⚠Increased cost: a simple one-animal removal can escalate to full exclusion and restoration if damage worsens.
- ⚠Legal penalties: harming protected species (bats, certain birds) without permits can result in fines.
Do you have a wildlife problem?
Treatment Options
Humane Trapping and Removal
$250-$600Live trapping of raccoons, squirrels, opossums, skunks, and other mammals using cage traps baited with food. Animals are relocated or euthanized per state regulations. This is a short-term solution unless combined with exclusion.
Full Exclusion and Sealing
$1,000-$2,500Inspection of the entire exterior, sealing all gaps larger than 1/4 inch with heavy-duty materials (steel mesh, caulk, flashing). One-way doors may be installed to allow animals to leave but not re-enter. This is the only permanent solution.
Attic Restoration and Cleanup
$1,500-$5,000Removal of contaminated insulation, sanitization, deodorization, and replacement with new insulation. Often needed after a prolonged infestation, especially with bats or raccoons. May include repair of chewed wires and structural damage.
Raccoon Control in New Hampshire
Raccoons are the most common large nuisance animal in NH, particularly in suburban areas like Nashua, Manchester, and Portsmouth. They are highly intelligent and can open latches, tear off shingles, and squeeze through gaps as small as 4 inches. In spring, females seek warm, dry spaces to give birth—your attic or chimney is ideal. Raccoons are notorious for damaging insulation and wiring, and their droppings can contain Baylisascaris procyonis, a roundworm that can be fatal if inhaled. Removal requires trapping, but because raccoons are creatures of habit, exclusion is critical to prevent return. NH Fish and Game requires that trapped raccoons be euthanized or released on the same property; relocation is discouraged due to disease spread.
Bat Exclusion and Guano Cleanup
New Hampshire is home to several bat species, including the little brown bat and big brown bat, both of which are protected. Bat colonies can number in the hundreds, and their droppings (guano) accumulate quickly, posing a histoplasmosis risk. Bats enter through gaps as small as 3/8 inch—often in eaves, soffits, or around chimneys. Exclusion must be done during specific windows: typically after young are able to fly (late August in NH) to avoid trapping babies inside. Professionals install one-way exclusion tubes that allow bats to leave but not re-enter. After exclusion, guano cleanup and insulation replacement are often necessary. It is illegal to kill bats or exclude them during maternity season (June-July) without a permit.
Squirrels: The Chewing Menace
Gray squirrels are the most common squirrel pest in NH, and they are relentless gnawers. They chew through wood, plastic, and even metal to gain entry to attics. Their constant gnawing helps keep their teeth sharp, but it can destroy wiring and cause electrical fires. Squirrels typically enter through roof vents, soffits, or gaps under eaves. In fall, they stash nuts in attics, which can rot and attract other pests. Removal involves live trapping or one-way doors. Because squirrels can have multiple litters per year, exclusion must be thorough. A single squirrel can cause thousands in damage if left unchecked.
Skunks: Odor and Spray Risks
Skunks are common in NH, especially in rural and suburban areas. They dig under sheds, decks, and porches for shelter, and their spray can linger for days. Skunks are carriers of rabies, and their digging can undermine foundations. In spring, females may den under structures to give birth. Removal requires trapping, but professionals use covered traps to minimize stress and spraying. Once trapped, skunks are typically euthanized per state guidelines. Exclusion involves burying hardware cloth around the base of structures to a depth of 12 inches. Avoid confronting a skunk; they give warning signs (stomping, tail raised) before spraying.
Opossums: The Underestimated Visitor
Opossums are frequent visitors to NH homes, though they are often confused with large rats. They are generally harmless and beneficial (they eat ticks, rodents, and carrion), but they can become a nuisance if they take up residence under a porch or in a garage. Opossums are not aggressive but will play dead when threatened. They have a short lifespan (2 years) and usually move on after a few days. However, they can carry diseases like leptospirosis. Removal is simple: live trap and relocate or euthanize. Exclusion is the same as for skunks: seal all ground-level openings.
Wildlife Control Options Comparison
| Option | Best For |
|---|---|
| Trapping & Removal | Immediate removal of individual animals; temporary fix |
| Full Exclusion | Permanent prevention; seals all entry points |
| Attic Restoration | Cleanup after prolonged infestation; restores insulation |
| DIY Trapping | Single squirrel or opossum if legal; low cost but high risk |
What Affects Cost
- ✓Number of animals: multiple animals require more traps and time.
- ✓Species: skunks (spray risk) and bats (large colonies) often cost more.
- ✓Accessibility: steep roofs, tight crawlspaces, or chimney work increase labor.
- ✓Severity of damage: repairing chewed wires or replacing insulation adds cost.
- ✓Season: spring and fall are busiest, so scheduling may affect price.
- ✓Guarantee: some companies offer a 1-5 year warranty on exclusion work.
- ✓Permits: handling certain species (e.g., bats) may require state permits that add fees.
What wildlife issue concerns you most in New Hampshire?
When to Call a Professional
Call a professional immediately if you suspect a bat colony (large numbers, guano accumulation), a raccoon with young (mother may be aggressive), or any animal in a hard-to-reach area like a chimney or wall void. Also call if you hear scratching that persists for more than a day—animals can cause significant damage quickly. In New Hampshire, many species are protected, and attempting removal yourself can be illegal or dangerous. Wild animals may bite or scratch, and improper handling can spread disease.
DIY vs Professional
DIY wildlife control is rarely effective long-term. Sealing a single hole may work for one squirrel, but a professional inspection often reveals multiple entry points that homeowners miss. DIY traps are legal for some species in NH (e.g., squirrels, skunks with a permit), but you must follow state rules on relocation and euthanasia. Pros have specialized knowledge of animal behavior, exclusion materials, and local regulations. They also have liability insurance and offer warranties. Given the risks of disease, property damage, and legal trouble, hiring a licensed professional is almost always worth the cost.
Local Context
New Hampshire's landscape varies from the Connecticut River Valley to the Lakes Region to the Seacoast, and wildlife issues reflect that diversity. In the White Mountains and North Country, black bears are a significant concern, especially in spring and fall when natural food is scarce. Bears can cause extensive property damage if they learn to associate homes with food. In the Seacoast region (Portsmouth, Dover), raccoons and bats are top issues due to older homes with many nooks. The Merrimack Valley (Manchester, Nashua) sees high squirrel and skunk activity due to dense suburbs. Southern NH also has more opossums as the climate warms. Across the state, spring (April-June) is the busiest time for wildlife calls, as animals give birth and seek shelter. Fall (September-November) is a second peak as animals prepare for winter. The NH Fish and Game Department regulates all wildlife control; only independent pest-control providers can handle certain species, and clients must ensure compliance.
Prevention Tips
- ✓Install heavy-duty chimney caps and cover all attic vents with 1/4-inch hardware cloth.
- ✓Trim tree branches at least 6 feet from the roofline to limit access for squirrels and raccoons.
- ✓Secure trash cans with locking lids and store them in a garage or shed until collection day.
- ✓Seal gaps around pipes, cables, and vents with caulk or steel wool; do not use foam alone.
- ✓Inspect the foundation and siding annually for cracks or holes; repair promptly.
- ✓Remove bird feeders or place them on poles with baffles to avoid attracting rodents and bears.
- ✓Keep pet food indoors and clean up fallen fruit from trees.
💡 Did You Know?
- ★Opossums are largely immune to most snake venom and eat thousands of ticks per season, making them beneficial to your property.
- ★Squirrels plant thousands of trees a year by forgetting where they bury nuts—a behavior that helps regenerate forests.
- ★A single bat can eat up to 1,000 mosquitoes per hour, so a bat colony near your home can actually reduce pests—but not in your attic.
Frequently Asked Questions
What is the most common wildlife problem in New Hampshire?
Is it legal to trap and relocate wildlife in NH?
How much does wildlife removal cost in New Hampshire?
How do I know if I have bats in my attic?
Can I seal an entry point after the animal leaves?
What should I do if I find a baby raccoon or squirrel?
How long does a typical exclusion take?
Are there any animals I cannot remove myself?
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Published by Wildlife Exterminator · No named licensed-professional review is claimed · Updated 2026-06-17T22:55:34.323Z
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