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.
Evidence check: squirrel encounters, DIY attempts and professional help
The statements below are tied to named surveys, studies and published cost guides, and each one says what it does and does not prove. They describe patterns across many households, which is useful context, not a diagnosis of any one property. For a homeowner, it helps to know that a few neighbors actively want more squirrels: 8.4% of metro-area residents reporting squirrels or chipmunks nearby said so in Puri and colleagues' 2022 survey (published 2024), which measured neighborhood attitudes, not infestations. Property managers can expect only modest appetite for squirrel reduction: 15.2% of metro-area residents reporting squirrels or chipmunks nearby wanted somewhat fewer, according to Puri and colleagues' 2022 survey (published 2024) of neighborhood attitudes, not of squirrels inside buildings. A homeowner at war with squirrels is in a small camp: 9.3% of metro-area residents reporting squirrels or chipmunks nearby wanted far fewer, in Puri and colleagues' 2022 survey (1,006 respondents, published 2024), which measured neighborhood attitudes rather than infested homes. Homeowners who prefer not to trap can ask about a one-way exclusion door, which Fixr's January 2025 U.S. publisher estimate puts at $200 to $600, a range that is an estimate rather than a measured price and that excludes sealing the other openings. For a property manager, the sobering number is that pests can end a tenancy: 7% of respondents in ConsumerAffairs' February 2024 survey of 2,000 U.S. respondents reported permanently leaving a home over pests, a self-reported finding from a mixed pest-and-mold survey, not an infestation rate. Use these numbers as context, not as a diagnosis. A provider's written inspection findings should drive the treatment plan, and any quote should spell out how many visits, which areas and what follow-up it covers.