The short version
Around St. Louis, 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.
Anyone in St. Louis dealing with wild animals around the house.
What to look for
Around St. Louis, 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 March 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
A wildlife inspection in St. Louis starts with the animal, not the hole: tracks, droppings, hair, chew marks, and the size of the opening all point to a species. Raccoons and squirrels need different doors, traps, and timing.
- Time
- 60–120 minutes
- Best for
- Every job; the species decides the method
Attic Cleanup, Sanitation, and Follow-Up
$500–$3,000+ depending on insulation removed
A follow-up visit a few weeks after exclusion is standard practice in St. Louis. Each sealed spot is checked for new damage.
- Time
- 1–2 days
- Best for
- Soiled insulation, droppings, odors, and re-checks
Exclusion Repairs (Chimney Caps, Vent Screens, Foundation Mesh)
$300–$2,500+ depending on scope
Chimney caps are the single most common exclusion repair in St. Louis: an uncapped flue is an open invitation to raccoons, squirrels, and chimney swifts. A stainless spark-screen cap solves it in an hour.
- Time
- Half a day to two days
- Best for
- Sealing the home after animals are out
One-Way Doors and Eviction
$200–$600
Eviction devices work best for squirrels and adult raccoons in St. Louis 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
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 St. Louis.
Louis out to Florissant and Kirkwood see much the same mix. Groundhogs are common here, and they're behind many holes under sheds in St. Louis. Around St. Louis, the most common animals are raccoons, squirrels, opossums, skunks, groundhogs and bats. Homes from St.
Local wildlife conditions in St. Louis.
Louis usually starts outside and works inward, checking the foundation, gaps around doors and windows, and any moisture or clutter near the structure first. Knowing St. Louis'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 St. Louis and Missouri 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. St. Louis sits in a humid continental climate, and that sets the pace for wildlife activity here: spring denning and fall (animals seek winter shelter). In St. Louis, the area is mostly urban, 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. An inspection in St.
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.
Mothers look for warm, dry spots like attics and chimneys. Never seal a hole while babies are still inside. Bat exclusion waits until pups can fly, usually by mid-August. Around St. Louis, most babies are born from about March through June.
A year of wildlife in St. Louis.
- Fall: animals hunt for winter dens. Seal gaps now. - Summer: highs near 89°F in St. Louis. Animals roam at night. - Spring: babies are born from about March through June. Don't seal while young are inside. - Winter: lows near 24°F in St. Louis. 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.
Around St. Louis, they sleep through winter and wake hungry in early spring. Groundhogs dig big burrows beside sheds, decks and foundations.
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
- Materials used: steel and hardware cloth over foam.
- Chimney cap size and whether a flue liner is needed.
- Number of animals, since trapping is priced per animal.
- Protected bird species requiring seasonal timing.
- Square feet of insulation removed and replaced.
- Warranty length on exclusion work and sealed points.
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What worries you most about wildlife?
When to call for help
Babies and droppings need careful handling. right away if one acts sick or aggressive. Call if an animal is in the attic, walls or chimney.
What you can do yourself
Never corner or handle one. Getting an animal out of the house is a pro's job. Secure trash, bring in pet food and trim branches.
Wildlife in St. Louis
Louis that starts outside and works inward usually finds the entry points, moisture, and shelter that matter most before anyone treats. An inspection in St. Louis has a humid continental climate, and wildlife activity here tends to follow spring denning and fall (animals seek winter shelter). St. Louis, animals live comfortably in town, using alleys, storm drains and older buildings. In St. In Missouri, skunks and bats carry most rabies. Louis send animals into attics and crawl spaces in fall. Winter lows near 24°F in St.
Local research
Wildlife in St. Louis, MO: what the public record shows
Before you compare quotes, it helps to know which wildlife actually live in Missouri, when they are busiest around St. Louis, and what the state figures look like. Everything below links to the agency or university page it came from.
Reporting deadline for wildlife taken under 3 CSR 10-4.130
Control only on your own property; migratory birds, deer, elk, turkey, bear, mountain lion and endangered species excluded.
Missouri Department of ConservationNuisance Wildlife species recorded in Missouri
- 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.
- Big brown bat (Eptesicus fuscus) — Most common building bat; protected with maternity-season exclusion limits.
When wildlife are busiest around St. Louis
Fall/winter den-seeking; June-July bat blackout. Upper Midwest: bats and skunks are the reservoirs; raccoon rabies absent.
Based on St. Louis’s humid continental climate profile.
Relocation is not recommended by MDC.
Rules that apply in Missouri
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: Missouri Department of Conservation; Rabies in the United States: Protecting Public Health; Class A (commercial) Nuisance Wildlife Control Permit study packet (17 Ill. Adm. Code 525); 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?
A gray squirrel can rotate its ankles to descend headfirst
A raccoon's mask likely reduces glare and improves night vision
Questions people ask
Can I trap the animal myself?
Check Missouri's rules first. Trapping can catch the wrong animal or orphan babies.
How do I get rid of a groundhog?
Fill in burrows after it leaves. Bury mesh around sheds and decks.
How do I get rid of a skunk under my deck?
Wait until it leaves at night. Then close the gap with buried wire mesh.
Does homeowners insurance cover wildlife damage?
Ask your insurer. Gradual chewing often isn't covered. Sometimes, for sudden damage.
What if there are babies in the attic?
A pro finds them and reunites them with the mother. Louis, babies are usually born from about March through June. Around St.
Which animals are most common around St. Louis?
Mostly raccoons, squirrels, opossums, skunks, groundhogs and bats.
When are wild animal babies born in St. Louis?
Usually from about March through June. Don't seal a hole while babies are inside.
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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