The Complete Guide to Squirrel Control
squirrels may seem cute in the park, but once they invade your attic, they become destructive pests. Their constant gnawing damages wood, insulation, and electrical wiring, creating both property damage and fire risks. Squirrel control is not about killing—it's about humane removal and permanent exclusion. At Squirrel Removal, we specialize in safe, effective squirrel control for homeowners and property managers across the United States. With inspection terms that vary by provider and a service guarantee, we ensure your home stays squirrel-free year-round.
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Squirrel control involves humane removal using one-way exclusion doors, sealing entry points, and preventing re-infestation. Professional services typically cost $250–$1,500 depending on damage and extent.
Key Takeaways
- →squirrels enter through gaps as small as 1.5 inches; seal all potential entry points.
- →Gnawing on wires creates a serious fire hazard; prompt removal is critical.
- →One-way exclusion doors are the standard humane method; avoid traps that separate mothers from babies.
- →Peak activity occurs during late winter/spring and late summer/fall breeding seasons.
- →DIY methods often fail; professional exclusion and repair provide lasting results.
squirrels can enter through surprisingly small gaps; once inside, they cause extensive damage.
Who This Is For
This guide is for homeowners, property managers, and landlords dealing with scratching noises in the attic, droppings, or visible squirrel activity. If you've noticed chewed holes in eaves, missing shingles, or squirrels entering your home, you'll find actionable advice here.
The Problem
squirrels invade attics for shelter and nesting, especially during their two breeding seasons: late winter/spring and late summer/fall. They are agile climbers and can squeeze through gaps as small as 1.5 inches—about the size of a golf ball. Once inside, they build nests in insulation, chew on wood and wires, and create pathways for other pests. Their continuously growing incisors require constant gnawing, which means they will chew through drywall, electrical cables, and even support beams. This behavior not only weakens your home's structure but also poses a significant fire risk. Additionally, squirrel droppings and urine can contaminate insulation and spread diseases like leptospirosis.
Warning Signs
- •Scratching or scurrying sounds in the attic, especially at dawn and dusk.
- •Droppings: dark, oblong pellets about 3/8 inch long, often near entry points.
- •Gnaw marks on wood, wires, or plastic pipes; look for paired grooves from incisors.
- •Nests made of leaves, twigs, and insulation in attic corners or vents.
- •Chewed holes in soffits, fascia, or roof edges, often with greasy smudge marks.
- •Squirrel tracks in dusty areas: four toes on front feet, five on back, with claw marks.
- •Strange odors from urine or decomposing squirrels (if one dies inside).
Risks of Waiting
- ⚠Electrical fires: squirrels chew through wiring, exposing live wires and creating sparks.
- ⚠Structural damage: gnawing on rafters, joists, and drywall can compromise your home's integrity.
- ⚠Secondary infestations: open entry points allow bats, raccoons, or birds to enter.
- ⚠Health hazards: droppings and urine can harbor bacteria and attract insects.
- ⚠Increased costs: delay leads to more damage and expensive repairs.
Do you have a squirrel problem?
Treatment Options
One-Way Exclusion Doors
$250–$500A humane device that lets squirrels exit but prevents re-entry. Installed at active entry points, typically left in place for 3–5 days to ensure all squirrels have left.
Full Exclusion & Repair
$500–$1,500Sealing all gaps (1.5 inches or larger) with heavy-duty materials like steel mesh, caulk, or sheet metal. Includes repair of chewed wood, soffits, and vent screens.
Trapping & Removal
$300–$600Live trapping set on the ground or roof, followed by relocation (where legal). Less preferred than exclusion due to risk of orphaning babies and high stress on animals.
Understanding Squirrel Behavior for Effective Control
squirrels are diurnal, meaning they are active during daylight hours, which is why scrathing sounds often occur in the morning and evening. They are excellent climbers, able to rotate their ankles 180 degrees to descend trees headfirst. This agility allows them to access roofs via trees, siding, or power lines. During breeding seasons, mothers seek warm, safe nesting sites—your attic is ideal. They can have two litters per year, each with 3–6 babies. If you exclude an adult without removing babies, the mother will frantically try to re-enter, sometimes causing additional damage. Professional removers check for nursing females and may use a 'wait and exclude' strategy. squirrels have excellent spatial memory and can remember the location of hundreds of buried nuts. This same memory helps them return to your home year after year if entry points are not sealed. That's why exclusion is more important than removal.
The Fire Hazard of Gnawed Wiring
One of the most serious risks of squirrel infestation is electrical fires. squirrels gnaw on wiring because their incisors grow continuously—about 6 inches per year—and they need to keep them trimmed. Modern home wiring often has plastic insulation that feels similar to tree bark, making it an attractive target. When a squirrel chews through a live wire, it can cause a short circuit, spark, and potentially ignite nearby insulation or wood. According to the National Fire Protection Association, rodents are a leading cause of electrical fires in attics. In fact, a 2020 industry report estimated that rodent-related fires account for over 20,000 house fires annually in the U.S. If you find evidence of gnawed wiring, have a professional electrician inspect your attic. Meanwhile, pest control experts can remove the squirrels and seal entry points to prevent recurrence. Squirrel Removal coordinates with electricians when needed to ensure your home is safe.
Exclusion Materials: What Works and What Doesn't
Effective exclusion requires materials that squirrels cannot chew through. Hardware cloth (1/4-inch galvanized mesh) is the gold standard for vents and chimneys. Steel wool mixed with caulk works well for small gaps because squirrels won't chew through the steel fibers. For larger holes, use 18-gauge sheet metal or heavy-duty aluminum flashing. What doesn't work? Expanding foam alone—squirrels can chew through it easily. Likewise, plastic mesh or wood patches provide only temporary relief. Professionals use a combination of materials, often backing foam with wire mesh for durability. At Squirrel Removal, we use only galvanized steel or copper mesh for long-lasting results. Sealing gaps as small as 1.5 inches is critical. Common entry points include: where siding meets roofline, around gable vents, under eaves, and at the intersection of roof lines. A thorough inspection is the first step in any exclusion job.
Squirrel Control Methods Compared
| Method | Effectiveness |
|---|---|
| One-way exclusion doors | High: humane, removes all squirrels |
| Trapping & relocation | Moderate: may miss babies, high stress |
| Repellents (mothballs, ultrasonic) | Low: no scientific evidence |
| Poison | Not recommended: inhumane, risk to pets/children |
| Full exclusion & repair | Very high: prevents re-entry |
What Affects Cost
- ✓Extent of damage: more chewing and nesting means higher repair costs.
- ✓Number of entry points: multiple holes increase labor and materials.
- ✓Roof pitch and accessibility: steep or high roofs require special equipment.
- ✓Location: urban areas may have higher labor rates.
- ✓Time of year: breeding season may require waiting for babies to leave.
- ✓Complexity of exclusion: some homes need custom metal flashing or chimney caps.
- ✓Guarantee: longer warranties may increase initial cost.
What's your biggest concern about a squirrel infestation?
When to Call a Professional
If you hear persistent scratching, see droppings or damage, or suspect a squirrel has entered your home, call a professional immediately. squirrels can cause extensive damage in a short time, and DIY removal often fails because it doesn't address all entry points. Squirrel Removal offers inspection terms that vary by provider and a service guarantee, so you can trust the job is done right.
DIY vs Professional
DIY squirrel control might seem cost-effective, but it rarely works long-term. Sealing a hole without ensuring all squirrels are out can trap animals inside, leading to death and odor. Repellents like mothballs or ultrasonic devices have little scientific backing and are not recommended by wildlife professionals. Professional exclusion uses durable materials and ensures all entry points are sealed. Pros also know how to handle babies during breeding season, preventing wildlife tragedies. Given the fire risk from chewed wires, investing in professional service is far cheaper than potential fire damage.
Local Context
Squirrel problems vary by region. In the Northeast and Midwest, gray squirrels and red squirrels are common attic invaders, especially during harsh winters. In the Southeast, fox squirrels are larger and may cause more structural damage. In the West, ground squirrels may burrow under foundations and patios, but tree squirrels still target attics. Regardless of region, the breeding seasons are consistent: January–March and June–August. During these times, mothers are most likely to enter attics. Property managers in multi-unit buildings should coordinate inspections across units, as squirrels can move between walls. Squirrel Removal operates nationwide, using region-specific techniques. For instance, in warmer climates, we recommend year-round inspections, while in colder areas, fall is the peak time for exclusion before winter.
Prevention Tips
- ✓Trim tree branches at least 6 feet away from your roof to prevent jumping access.
- ✓Install a metal chimney cap with mesh to block entry from above.
- ✓Cover vents (gable, soffit, ridge) with heavy-duty 1/4-inch hardware cloth.
- ✓Seal gaps around utility lines, pipes, and cables entering the attic with steel wool and caulk.
- ✓Inspect eaves and fascia annually for loose boards or holes; repair promptly.
- ✓Remove bird feeders that attract squirrels; place them far from the house.
- ✓Use squirrel-proof baffles on bird feeders and garbage cans.
💡 Did You Know?
- ★squirrels use a 'fake burial' tactic: they dig a hole, pretend to drop a nut, then cover it up empty to fool thieves.
- ★They can rotate their ankles 180 degrees, allowing them to climb down trees headfirst—a rare skill among mammals.
- ★a squirrel's front incisors grow about 6 inches per year; constant gnawing keeps them trimmed.
Frequently Asked Questions
How can I tell if I have squirrels or rats in the attic?
Will mothballs or ultrasonic repellents get rid of squirrels?
How much does professional squirrel removal cost?
Can I just seal the hole I see?
How long does it take to get rid of squirrels?
What happens if there are baby squirrels in the attic?
Do you offer a guarantee?
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Published by Squirrel Exterminator · No named licensed-professional review is claimed · Updated 2026-05-29T03:36:22.418Z
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