Squirrel Removal and Attic Exclusion in Chicagoland

Squirrels are part of daily life in Chicago's parks and tree-lined suburbs, but when they move into an attic, they become a destructive and noisy problem. Eastern gray squirrels and fox squirrels are the species most often found in homes here, and they are skilled at chewing through soft wood, aluminum soffits, roof vents, and even the edges of shingles to reach a warm, dry nesting space. Once inside, they shred insulation, chew wiring, and stash food in wall voids. Squirrels can have young in late winter and again in summer, so timing matters when removing them. Blocking an entrance while babies are inside can lead to the mother chewing a new hole or young dying in the walls. A licensed wildlife specialist can confirm how many squirrels are present, use one-way exclusion devices or other approved methods, and seal every weak point.

Signs of squirrels in a Chicago-area home

• Scampering, scratching, or rolling sounds in the attic shortly after sunrise and before sunset
• Chewed holes in fascia boards, soffits, roof vents, or gable vents
• Squirrels repeatedly running along the gutter or disappearing under the roofline
• Nut shells, acorn caps, or pine cone debris in the attic or on the roof
• Insulation pulled up or tunneled, with leaves and shredded material piled into nests
• Chewed wiring or tooth marks on wood and plastic in the attic
• Stains or odor on ceilings below the attic
• Squirrels entering through chimney tops or damaged ridge vents

Squirrel species found in Chicagoland

Two tree squirrels account for most home invasions in the region. The eastern gray squirrel is slender and gray, sometimes with a tan wash, and it thrives in older Chicago neighborhoods and heavily wooded suburbs. Black-colored gray squirrels also occur in parts of the area. The fox squirrel is larger, with a rusty orange underside and a bushy reddish tail, and it favors open woodlands, parkways, and suburban yards with scattered oaks and walnuts. Both species build leaf nests, called dreys, in tree crotches, but they readily choose attics when they can get in. Red squirrels are more common farther north but occasionally show up near conifers. Southern flying squirrels also live in wooded parts of the region; they are nocturnal and less often noticed, but they sometimes nest in attics in groups.

Why squirrels are a problem here

Chicagoland's mature canopy of oaks, maples, hickories, and walnuts supports large squirrel populations, and many homes sit under branches that reach right to the roof. Squirrels need to gnaw constantly to keep their teeth worn down, so they chew whatever is available, including wood trim, vent covers, and electrical wiring in attics, which can create a fire hazard. They soil insulation with urine and droppings and pack wall cavities with nesting debris and stored nuts. A squirrel that dies in a wall void can cause an odor for weeks. Holes they leave in the roofline let in rain and melting snow, which can lead to rot and water stains. They also attract other pests, since abandoned nests and openings can be used later by mice, bats, or insects.

How licensed wildlife specialists handle it

The job starts with an inspection of the roof, soffits, vents, chimney, and trees near the home to find every entry and possible entry point. If young are not present, specialists commonly install a one-way exclusion door over the main entrance so squirrels can leave to forage but cannot get back in, and they seal all other openings with heavy-gauge metal mesh or flashing, since squirrels chew through plastic and thin screen. When babies are in the attic, the timing and method change: specialists may wait until young are mobile, or carefully remove them so they can be reunited with the mother. Illinois regulates the capture and handling of nuisance wildlife, and licensed operators hold the permits for trapping when that approach is needed. Many providers also offer attic cleanup and insulation repair.

Squirrel prevention tips

• Trim branches so they are well back from the roof, gutters, and siding
• Replace plastic roof and gable vents with metal versions or add sturdy metal guards
• Install a metal chimney cap and inspect it each year
• Repair rotted fascia and soffits promptly, before squirrels widen the gap
• Use baffles on bird feeder poles and keep feeders away from the house
• Cover gaps where roof sections meet, a common chewing spot
• Check the roofline in late winter and midsummer, when squirrels seek nest sites
• Avoid feeding squirrels near the house, which increases their interest in your home

What affects the cost of squirrel removal

The number of entry points and the height of the roofline have a big effect on the price. A single-story ranch with one chewed vent is quicker and easier than a steep two-and-a-half-story home with multiple gaps along the eaves and dormers. Whether young are present affects timing and labor, since extra care is needed to avoid orphaned babies in the attic. Most providers separate the cost of removal, sealing every other opening, and optional attic cleanup. Heavy damage to insulation, wiring, or wood trim can add repair work, and a squirrel that has died in a wall may require locating and removing it. Some specialists offer a warranty on their exclusion work, so it is worth asking how long repairs are covered against re-entry.

Seasonal timing in northern Illinois

Squirrels in this region usually breed twice a year. The first mating season takes place in mid to late winter, with litters typically born from about February into April, which is why many homeowners hear scratching in the attic in early spring. The second breeding season comes in early summer, producing litters around July through September. Late fall is another busy period, since squirrels gather food and look for warm winter shelter as leaves drop and the canopy thins. Squirrels do not hibernate and remain active on mild winter days. The best time for exclusion is typically when young are old enough to leave the nest, often in late spring or early fall, but an active problem should be inspected promptly so the specialist can plan the right approach.