The short version
Around Arlington Heights, the most common animals are raccoons, squirrels and opossums. Identify yours first. Then get it out and seal the gap.
- Never handle a wild animal.
- Figure out which animal it is first.
- Check for babies before sealing.
- Use metal mesh, not foam.
- Secure trash and pet food.
Homeowners in Arlington Heights with an animal in the attic, walls, chimney or yard.
What to look for
Around Arlington Heights, the usual animals are raccoons, squirrels, opossums, skunks, groundhogs and bats. Each one gets in differently and needs a different fix. Babies are usually born from about April through June.
- 1Scratching or thumping in the attic.
- 2Torn vents, soffits or shingles.
- 3A musky or skunky smell.
- 4Dug holes under decks or sheds.
- 5Trash bins knocked over.
- 6Droppings on decks or in the attic.
Why it’s worth acting soon
- Chewed wires and damaged insulation.
- Droppings that can spread disease.
- Babies make removal harder.
- Rabies risk from bites.
Treatment options and typical costs
Inspection and Species Identification
$100–$300
Good inspections in Arlington Heights also look for secondary damage: chewed wiring, torn ductwork, soaked insulation, and skunk or groundhog burrows undermining a slab or deck. That damage shapes both the plan and the price.
- Time
- 60–120 minutes
- Best for
- Every job; the species decides the method
One-Way Doors and Eviction
$200–$600
Eviction devices work best for squirrels and adult raccoons in Arlington Heights when every other opening has already been sealed. Leave one gap unsealed and the animal simply moves to it.
- Time
- 3–7 days
- Best for
- Squirrels, raccoons, and birds using a single main entry
Humane Live Trapping and Removal
$150–$500 per animal, plus trip fees
For a skunk under a porch in Arlington Heights, providers use covered traps and slow, quiet handling to keep the animal calm. Skunks spray when startled, so technique beats speed.
- Time
- Several days to two weeks
- Best for
- Animals already inside or denning under structures
Attic Cleanup, Sanitation, and Follow-Up
$500–$3,000+ depending on insulation removed
Providers in Arlington Heights who do cleanup should wear respirators and bag waste on site. Homeowners in Arlington Heights handling raccoon droppings without protection risk exposure to Baylisascaris roundworm eggs, which survive for years in soil.
- Time
- 1–2 days
- Best for
- Soiled insulation, droppings, odors, and re-checks
Prices are typical published ranges. Ask what’s included before you compare quotes.
In the attic, look for flattened insulation, droppings and nests. Leave big cleanups to someone with the right gear.Animals around Arlington Heights.
Homes from Arlington Heights out to Palatine and Des Plaines see much the same mix. Groundhogs are common here, and they're behind many holes under sheds in Arlington Heights. Around Arlington Heights, the most common animals are raccoons, squirrels, opossums, skunks, groundhogs and bats.
Local wildlife conditions in Arlington Heights.
An inspection in Arlington Heights usually starts outside and works inward, checking the foundation, gaps around doors and windows, and any moisture or clutter near the structure first. Knowing Arlington Heights's seasonal timing lets you schedule treatment before the busy stretch rather than after it, which usually means faster service and a more accurate quote. A provider who works Arlington Heights and Illinois every day can point out the specific conditions that matter most here, and getting the scope, price, and follow-up terms in writing makes it easier to compare options. Arlington Heights sits in a humid continental climate, and that sets the pace for wildlife activity here: spring denning and fall (animals seek winter shelter). For Arlington Heights homes, the area is mostly suburban, so wildlife pressure can differ from one block to the next depending on how tight the entry points are and how much food, water, or shelter is close by.
Walk the foundation with a flashlight. Gaps at ground level let animals under the house.What’s that noise?
- A strong smell under the deck: skunks. - Rustling at dusk at the roof edge: bats. - Heavy thumps at night: raccoons. - Quick scurrying at dawn and dusk: squirrels. - A big burrow beside the shed: groundhogs.
Baby season.
Never seal a hole while babies are still inside. Bat exclusion waits until pups can fly, usually by mid-August. Around Arlington Heights, most babies are born from about April through June. Mothers look for warm, dry spots like attics and chimneys.
A year of wildlife in Arlington Heights.
- Fall: animals hunt for winter dens. Seal gaps now. - Summer: highs near 84°F in Arlington Heights. Animals roam at night. - Spring: babies are born from about April through June. Don't seal while young are inside. - Winter: lows near 17°F in Arlington Heights. Animals den up in attics.
Raccoons.
They tear open vents and roof edges. Heavy thumps at night usually mean a raccoon. Never handle one.
Tree squirrels.
Squirrels are busy at dawn and dusk. They chew small gaps into bigger holes, and wires too.
Opossums.
Opossums are quiet, slow and mostly harmless. They move into crawl spaces and under decks.
Skunks.
Skunks den under decks, sheds and porches. A strong smell after dark is the giveaway.
Groundhogs.
Groundhogs dig big burrows beside sheds, decks and foundations. Around Arlington Heights, they sleep through winter and wake hungry in early spring.
Bats.
Bats slip through gaps as small as a thumb. Look for droppings under a gap at the roofline.
Getting them out the right way.
- Seal: heavy metal mesh on every gap. - Door: a one-way door lets the animal leave. - Check: look for babies first. - Identify: figure out which animal it is. - Recheck: make sure nothing is trying to get back in.
Where animals get in.
- Crawl-space doors and foundation vents. - Uncapped chimneys. - Gaps where the roof meets the wall. - Roof vents and soffit corners. - Under decks, porches and sheds.
If an animal gets inside the house.
Keep kids and pets away. Open an outside door or window in that room, then leave. Close interior doors so it stays in one room. Call your health department first. Is it a bat, and was someone asleep there?
Droppings and cleanup.
- Wet droppings down, then bag them. - Wear gloves, a mask and old clothes. - Don’t sweep or vacuum droppings dry. - Large attic messes are a job for pros.
Keeping your yard less inviting.
- Fruit: pick up what falls. - Birds: use a seed tray, and sweep up spills. - Pets: feed them indoors. - Trash: locking lids, or keep bins in the garage. - Cover: clear brush and wood piles near the house.
Wildlife myths.
- Mothballs drive them out: they don’t, and they’re a health hazard. - Moving them is kind: often illegal, and babies get left. - Out in daylight means rabid: not always; mothers forage by day. - Lights and radios work: only briefly.
Birds in vents and chimneys.
Wait until the young have flown. Most native birds are protected while nesting. Starlings and sparrows love dryer and bath vents. Chimney swifts nest in chimneys in summer and leave in fall. Then fit a vent cover that still lets air out.
If an animal seems sick.
Keep people and pets inside. Staggering, circling or acting unafraid can mean illness. Don't try to trap or touch it. animal control or your local health department.
Pets and wildlife.
Bring pets in at night. Keep pets' rabies shots up to date. your vet if your pet tangles with a wild animal.
What a wildlife visit looks like.
They set a one-way door or trap. They look for tracks, droppings and torn vents. The tech walks the roofline and the foundation. Cleanup comes last. Later, they come back and seal up.
If a skunk sprays.
- Clothes: wash with baking soda added to the load. - Eyes: keep the mix out; rinse with cool water. - Tomato juice: it doesn’t really work. - People and pets: wash with peroxide, baking soda and dish soap. - Under the house: air it out; the smell fades over days.
Babies found alone.
Leave them be and watch from a distance for a day. Baby animals alone are often just waiting for a parent. Call a wildlife rehabilitator. Hurt or clearly orphaned?
Fencing that works.
- Gardens: hardware cloth beats chicken wire. - Climbers: an electric wire near the top stops raccoons. - Diggers: bury wire mesh a foot down, bent outward. - Gates: keep gaps underneath to a couple of inches.
Questions to ask before you sign.
- What will you seal with? - What happens to the animal? - How will you handle babies? - Where is it getting in? - Which animal is it? - Is cleanup included?
What affects the price
- Permit, relocation, or disposal rules in your state.
- Species involved; skunks and raccoons cost more to handle.
- Whether young are present and need hand removal.
- Protected bird species requiring seasonal timing.
- Presence of a raccoon latrine requiring special cleanup.
- Roof height and pitch affecting ladder or lift needs.
📊
What worries you most about wildlife?
When to call for help
right away if one acts sick or aggressive. Babies and droppings need careful handling. Call if an animal is in the attic, walls or chimney.
What you can do yourself
Getting an animal out of the house is a pro's job. Never corner or handle one. Secure trash, bring in pet food and trim branches.
Wildlife in Arlington Heights
An inspection in Arlington Heights that starts outside and works inward usually finds the entry points, moisture, and shelter that matter most before anyone treats. Arlington Heights has a humid continental climate, and wildlife activity here tends to follow spring denning and fall (animals seek winter shelter). In Arlington Heights's neighborhoods, decks, sheds and trash bins draw animals in. In Illinois, bats are the animal most often found with rabies. Winter lows near 17°F in Arlington Heights send animals into attics and crawl spaces in fall.
Local research
Wildlife in Arlington Heights, IL: what the public record shows
Before you compare quotes, it helps to know which wildlife actually live in Illinois, when they are busiest around Arlington Heights, and what the state figures look like. Everything below links to the agency or university page it came from.
Trapped striped skunks
Raccoons must be euthanized or released on the same property.
Illinois DNRCharging a fee for wildlife removal
Bats may not be shot, trapped, transported or held except in living-quarters situations.
Illinois DNRNuisance Wildlife species recorded in Illinois
- Raccoon (Procyon lotor) — Top terrestrial rabies vector in the East; relocation banned in most states.
- Striped skunk (Mephitis mephitis) — Primary rabies reservoir in Texas and the central U.S.; Illinois requires euthanasia of trapped striped skunks.
- Virginia opossum (Didelphis virginiana) — Furbearer in Illinois; rarely rabid; handled under general nuisance rules.
- Big brown bat (Eptesicus fuscus) — Most common building bat; protected with maternity-season exclusion limits.
When wildlife are busiest around Arlington Heights
Fall/winter den-seeking; June-July bat blackout. Upper Midwest: bats and skunks are the reservoirs; raccoon rabies absent.
Based on Arlington Heights’s humid continental climate profile.
Rules that apply in Illinois
For context, nationally
- Around 4,000; more than 90% in wildlife — Animal rabies cases reported per year. CDC
- More than 20% each — Skunks and foxes that expose people or pets and are rabid. CDC
Sources: Class A (commercial) Nuisance Wildlife Control Permit study packet (17 Ill. Adm. Code 525); Rabies in the United States: Protecting Public Health; Impacted Bats. Figures are quoted as the source prints them. How we check our sources
Simple ways to keep wildlife away
- Use locking or strapped trash lids.
- Bring pet food in at night.
- Cap the chimney.
- Trim branches back from the roof.
- Bury wire mesh around decks and sheds.
- Pick up fallen fruit and spilled bird seed.
Ask which animal it is, how babies will be handled, and whether sealing and cleanup are included.Did you know?
Flying squirrels glide up to 150 feet using a skin membrane
A raccoon's mask likely reduces glare and improves night vision
Questions people ask
Do wildlife pros use poison?
Ask what any chemical is for. Poisons aren't used on wildlife like raccoons or squirrels. No.
Are bird nests protected?
Most native bird nests are protected by federal law. Starlings, house sparrows and pigeons aren't.
What is included in attic cleanup?
Removing droppings and soiled insulation, then sanitizing. New insulation goes in if needed.
How do I choose a wildlife company?
Look for someone licensed for wildlife work in Illinois. Ask how they handle babies and what they seal with.
What season is worst for wildlife problems?
Spring babies and fall den-hunting are busiest around Arlington Heights.
Which animals are most common around Arlington Heights?
Mostly raccoons, squirrels, opossums, skunks, groundhogs and bats.
When are wild animal babies born in Arlington Heights?
Usually from about April through June. Don't seal a hole while babies are inside.
Nearby cities
Related guides
Sources (10)
The facts in this article come from the public sources listed above. Every home is different, so ask the company you talk to about pricing and what’s included. Published by Wildlife Exterminator · Updated September 11, 2026 · How we write these guides