The short version
Trap the ones inside, then seal the gaps. An inspection usually costs $75–$250.
- Look for droppings, gnaw marks and night-time scratching.
- Around La Crosse, mice usually start moving indoors in September and October, as nights get colder.
- Traps remove them; sealing keeps them out.
- Never sweep or vacuum droppings dry.
Homeowners, renters and landlords in La Crosse who are hearing, seeing or smelling signs of rodents.
What to look for
A mouse fits through a gap the size of a dime. Seeing one in daylight usually means there are more. Rodents are mostly unseen. You hear them at night and find droppings by morning.
- 1Droppings in drawers, pantries, under sinks, or along walls.
- 2Scratching or scurrying sounds in walls or ceilings at night.
- 3Gnaw marks on food packaging, wood trim, or wiring.
- 4Rodent hair or droppings inside HVAC ducts.
- 5Burrow holes along the foundation, deck, or shed.
- 6Small dark droppings on top of the water heater.
Why it’s worth acting soon
- Mice breed fast, every few weeks.
- Droppings and urine contaminate food and insulation.
- Gnawed wiring can be a fire risk.
- Nests and odor get harder to clean the longer they stay.
Treatment options and typical costs
Inspection and Entry-Point Mapping
$75–$250
Skipping this step is why so many homeowners buy traps twice. A proper La Crosse inspection finds the gap you cannot see from the ground, usually up high or under the deck.
- Time
- 60–90 minutes
- Best for
- Every job; nothing else works without it
Follow-Up Monitoring
$50–$150 per visit, or included in a plan
Monitoring is how you know the job actually worked. A La Crosse pro returns after sealing to check traps, look for fresh droppings, and confirm nothing has chewed through a repair.
- Time
- 20–40 minutes per visit
- Best for
- Confirming the house stays clear after treatment
Tamper-Resistant Exterior Bait Stations
$100–$300 setup, $40–$80 per service visit
Rodenticides are regulated, and some products are restricted to licensed applicators. Ask which product they use. Ask how they protect pets and wildlife.
- Time
- 30–45 minutes per visit, ongoing
- Best for
- Outdoor rat pressure; ongoing perimeter protection
Attic and Crawlspace Cleanup and Sanitation
$500–$3,000, higher if insulation is replaced
Soaked or matted insulation usually has to be replaced. That drives the top of the range in La Crosse, so ask for a separate line item for insulation.
- Time
- Half day to two days
- Best for
- Heavy contamination; odor, urine-soaked insulation, nesting
Prices are typical published ranges. Ask what’s included before you compare quotes.
Clutter gives mice cover. Keeping stored fabric in lidded bins and off the floor takes away the nesting spots they like best.Which rodents live around La Crosse.
They burrow along foundations and enter low. Norway rats are the other usual suspect. They're small, curious and breed quickly. House mice are the most common rodent in La Crosse homes.
When they move in.
Spring is breeding season. Check for gaps before then. Small problems grow fast.
Dense shrubs against the house and a dripping hose bib give rodents cover and water. Trimming back and fixing drips makes the yard less inviting.How they get into houses here.
Check where pipes and cables enter. Rodents use gaps around utility lines, dryer vents and window wells. Plenty of homes in La Crosse have basements. Window wells need covers or screens. Look at the dryer vent flap.
A year of rodents in La Crosse.
- Fall: mice move indoors as nights cool. Seal gaps in September. - Summer: with highs around 84°F in La Crosse, rodents look for water. Fix drips and leaks. - Spring: breeding season. Act on any sign quickly. - Winter: with lows near 9°F in La Crosse, check the attic, garage and pantry for droppings.
Mice or rats?
- Droppings: mouse droppings are rice-sized. Rat droppings are two or three times bigger. - Rub marks: rats leave greasy smudges along walls and beams. - Behavior: mice are curious about new traps. Rats avoid them for days. - Sounds: mice sound light and quick. Rats sound heavier. - Holes: mice chew dime-sized holes. Rats chew holes closer to quarter-sized.
Sealing small gaps yourself.
- Steel wool or copper mesh: pack it into small gaps first. - Check your work: daylight through a gap means it isn’t sealed. - Expanding foam: fine on top of mesh, useless on its own. - Door sweeps: close the gap under garage and exterior doors. - Hardware cloth: use quarter-inch mesh over vents and larger holes. - Sealant or mortar: cover the mesh so it stays put.
Cleaning up droppings safely.
- Air the room out for 30 minutes first. - Wash your gloved hands, then your hands. - Don’t sweep or vacuum droppings dry. It stirs up dust. - Wipe up with paper towels and bag them. - Spray droppings with a bleach solution, then wait five minutes. - Wear rubber or plastic gloves.
What happens at an inspection.
They check the foundation, vents, rooflines and utility gaps. The inspector walks the outside first. Most inspections take about an hour. Photos help. You should come away with a list of entry points. Inside, they check the kitchen, garage and attic.
Rodents in the car.
Park in a closed garage when you can. Mice and rats nest in engine bays and chew wiring. Clear birdseed and pet food from the garage. Check the air filter box for nesting.
Bird feeders and rodents.
Use a seed tray and sweep up spills. Spilled seed feeds mice and rats. Store seed in a metal can with a tight lid. If rodents show up, bring feeders in at night.
Questions to ask before you sign.
- Where are they getting in? - Will you use poison inside? (Ask them not to.) - Is cleanup included, or extra? - What happens if they come back? - How many trap visits are included? - Which gaps will you seal, and with what?
Rodents by the numbers.
Around La Crosse, ask any provider to show you the entry points and the plan before you compare numbers. Around La Crosse, those three findings — species, entry points, and scale — are what a quote should be built on, not a regional average. Around La Crosse, what actually matters is a walk-through: where the droppings are, how the rodents are getting in, and how large the colony is. National surveys set rough expectations but cannot diagnose one house.
What affects the price
- Home size, stories, and roofline complexity.
- Local labor rates and licensing costs.
- Follow-up visits included versus billed separately.
- Whether insulation must be removed and replaced.
- Materials used for sealing: mesh, sheet metal, mortar.
- Mice versus rats; rats take longer and cost more.
📊
What's your biggest concern about rodents?
When to call for help
Call right away if you see rats. They take a longer, more careful approach. Attic cleanup is hard to do safely without training. Call if you hear them in the attic or walls. Droppings in several rooms are another sign. So is a dead-rodent smell.
What you can do yourself
Seal small gaps with steel wool and sealant. Rooflines, vents and attics are harder. That's where a pro's sealing work pays off. Start tonight with snap traps along the walls. Bait them with peanut butter. Store food in sealed bins.
Rodents in La Crosse
In La Crosse's neighborhoods, woodpiles, fences, bird feeders and gardens draw rodents close to the house. A typical home in La Crosse is worth around $215k, and chewed wiring or soiled insulation can get expensive. With about 33 inches of rain a year, La Crosse gives rodents plenty of water, so food and shelter are what you control. Winter lows average around 9°F in La Crosse, and that cold is what sends mice looking for a way in.
Local research
Rodents in La Crosse, WI: what the public record shows
Before you compare quotes, it helps to know which rodents actually live in Wisconsin, when they are busiest around La Crosse, and what the state figures look like. Everything below links to the agency or university page it came from.
Rodent species recorded in Wisconsin
- House mouse (Mus musculus) — Enters at 1/4 inch; 5-10 litters per year; eats about 200 small meals a night.
- Norway rat (Rattus norvegicus) — Burrowing rat of basements, sewers and ground floors; tail shorter than head plus body.
- Deer mouse (Peromyscus maniculatus) — Primary U.S. hantavirus carrier; lives throughout Washington and the interior West.
When rodents are busiest around La Crosse
Rodents move indoors as Wisconsin temperatures drop in fall.
UW-Madison Extension's applicator training treats exclusion as the core of rodent management, with trapping second.
For context, nationally
- 1/4 inch (the width of a pencil) — Smallest gap a mouse can enter. CDC
- 890; 35% fatal; 94% west of the Mississippi — Hantavirus cases reported since 1993 (through 2023). CDC
Sources: University of Wisconsin-Madison Division of Extension; CDC; Pest Notes: House Mouse; Pest Notes: Rats; Hantavirus. Figures are quoted as the source prints them. How we check our sources
Simple ways to keep rodents away
- Store pet food and birdseed in sealed metal containers.
- Fit garage doors with tight bottom seals and corner guards.
- Fill gaps around pipes, cables, and AC lines with copper mesh.
- Cover dryer and exhaust vents with metal louvered covers.
- Walk the exterior each season looking for fresh gnawing.
- Screen foundation and attic vents with quarter-inch hardware cloth.
Shared basements and utility rooms are where rodent problems in rentals usually start. Landlords should walk them each fall and after every tenant turnover.Did you know?
Male house mice sing ultrasonic songs that humans can't hear.
Around La Crosse, rodents make up about 40 percent of all mammal species on Earth.
Questions people ask
Can I just seal the holes myself?
Foam alone won't stop them. Rooflines and vents are harder, and that's where a pro helps. Small gaps, yes. Use steel wool or copper mesh, then seal over it.
Do ultrasonic repellers work?
It doesn't pass through walls either. Sealing and trapping work better. Not reliably. Rodents get used to the sound within days.
How do I choose a rodent control company?
Ask what happens if rodents come back. A good company talks about sealing, not just traps. Make sure they're licensed in Wisconsin. Ask how they seal gaps and what materials they use.
Are rats a bigger problem than mice?
Rats are bigger, chew more, and avoid new traps for days. They also tend to need more sealing work outside. Usually.
Will rodents leave on their own?
Rarely. Once they've found food, water and a warm nest, they stay.
Is one mouse in the house a sign of an infestation?
Thirty-seven percent of U.S. homeowners in a September 2022 Harris Poll for the National Pest Management Association (NPMA) said their rodent experience involved a single animal. Around La Crosse, find out up front how many visits are included and what the company does if the rodents come back. Not necessarily. It deserves a look.
Where in the house are mice most often found?
homeowners, 37% reported a sighting in the kitchen. Around La Crosse, the next step is usually an inspection that finds where the rodents are getting in. The kitchen leads. Among homeowners who had ever encountered rodents in the National Pest Management Association's (NPMA) September 2022 Harris Poll of more than 1,300 U.S.
Are rodents a problem in La Crosse?
They're common here, as almost everywhere. House mice cause most problems.
Nearby cities
Related guides
Sources (11)
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 Rodent Exterminator · Updated September 11, 2026 · How we write these guides