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 Scarborough, 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 Scarborough who are hearing, seeing or smelling signs of rodents.
What to look for
Seeing one in daylight usually means there are more. A mouse fits through a gap the size of a dime. You hear them at night and find droppings by morning. Rodents are mostly unseen.
- 1Greasy rub marks along baseboards, beams, and pipe runs.
- 2Disturbed insulation or tunnels in the attic.
- 3Shredded paper, fabric, or insulation gathered into a nest.
- 4Droppings in drawers, pantries, under sinks, or along walls.
- 5Food scattered or hollowed-out fruit and nuts.
- 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
Expect a flashlight, a mirror, and a lot of crouching. In Scarborough homes, the usual entry points are garage door corners, dryer vents, gaps around pipes, and roof-to-fascia joints.
- Time
- 60–90 minutes
- Best for
- Every job; nothing else works without it
Sealing and Rodent-Proofing
$200–$1,500, more for large or complex homes
Price depends on how many openings the Scarborough inspection found and how hard they are to reach. A Scarborough ranch on a slab is cheaper to seal than a two-story home with a crawlspace and complex rooflines.
- Time
- 2–6 hours, sometimes a full day
- Best for
- Stopping re-entry for good; the lasting fix
Snap-Trap Program
$150–$400 per visit
Snap traps remain the workhorse for rodents inside Scarborough homes because a caught rodent is proof, not a guess. A Scarborough pro sets many traps along walls and runways, then returns to check, reset, and remove.
- Time
- 30–60 minutes per visit, 2–4 visits
- Best for
- Active indoor infestations; fast results you can see
Follow-Up Monitoring
$50–$150 per visit, or included in a plan
Fresh droppings look dark and soft; old ones look gray. That tells a pro whether activity is current.
- Time
- 20–40 minutes per visit
- Best for
- Confirming the house stays clear after treatment
Prices are typical published ranges. Ask what’s included before you compare quotes.
Bathroom vanities hide the same plumbing gaps as the kitchen. A quick look with a flashlight shows droppings or rub marks long before you see a mouse.Which rodents live around Scarborough.
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 Scarborough homes.
When they move in.
Small problems grow fast. Spring is breeding season. Check for gaps before then.
Fall is when rodents head indoors. Leaf piles against the foundation hide burrows and gaps, so clear them and walk the wall before the first cold snap.How they get into houses here.
Homes from Scarborough out to Portland and South Portland share the same weak spots, so the checklist below works across the area. Window wells need covers or screens. Look at the dryer vent flap. Check where pipes and cables enter. Rodents use gaps around utility lines, dryer vents and window wells. Plenty of homes in Scarborough have basements.
A year of rodents in Scarborough.
- Summer: with highs around 78°F in Scarborough, rodents look for water. Fix drips and leaks. - Spring: breeding season. Act on any sign quickly. - Winter: with lows near 14°F in Scarborough, check the attic, garage and pantry for droppings. - Fall: mice move indoors as nights cool. Seal gaps in September.
Mice or rats?
- 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. - Droppings: mouse droppings are rice-sized. Rat droppings are two or three times bigger.
Sealing small gaps yourself.
- 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. - Steel wool or copper mesh: pack it into small gaps first.
Cleaning up droppings safely.
- 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. - Air the room out for 30 minutes first.
What happens at an inspection.
Photos help. You should come away with a list of entry points. Inside, they check the kitchen, garage and attic. They check the foundation, vents, rooflines and utility gaps. The inspector walks the outside first. Most inspections take about an hour.
Rodents in the car.
Clear birdseed and pet food from the garage. Check the air filter box for nesting. Park in a closed garage when you can. Mice and rats nest in engine bays and chew wiring.
Bird feeders and rodents.
Store seed in a metal can with a tight lid. If rodents show up, bring feeders in at night. Use a seed tray and sweep up spills. Spilled seed feeds mice and rats.
Questions to ask before you sign.
- 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? - Where are they getting in?
Rodents by the numbers.
Around Scarborough, ask any provider to show you the entry points and the plan before you compare numbers. Around Scarborough, those three findings — species, entry points, and scale — are what a quote should be built on, not a regional average. Around Scarborough, 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
- Whether insulation must be removed and replaced.
- Materials used for sealing: mesh, sheet metal, mortar.
- Whether sheds, garages or other outbuildings are included.
- Attic access and how much insulation is contaminated.
- Follow-up visits included versus billed separately.
- Outdoor pressure from creeks, alleys, or restaurants nearby.
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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
That's where a pro's sealing work pays off. Rooflines, vents and attics are harder. Seal small gaps with steel wool and sealant. Store food in sealed bins. Bait them with peanut butter. Start tonight with snap traps along the walls.
Rodents in Scarborough
Scarborough gets about 47 inches of rain a year, and heavy storms flood burrows, which pushes rats toward buildings. Winter lows average around 14°F in Scarborough, and that cold is what sends mice looking for a way in. In Scarborough's neighborhoods, woodpiles, fences, bird feeders and gardens draw rodents close to the house. A typical home in Scarborough is worth around $480k, and chewed wiring or soiled insulation can get expensive. Around Scarborough, the humid continental climate means rodents activity tends to follow fall and winter (rodents move indoors for warmth), so scheduling the visit before the busy stretch usually means a faster response and a cleaner quote. Around Scarborough, comparing written quotes side by side is the easiest way to see what is actually included, because the scope, prep steps, and follow-up terms vary a lot between providers.
Local research
Rodents in Scarborough, ME: what the public record shows
Before you compare quotes, it helps to know which rodents actually live in Maine, when they are busiest around Scarborough, and what the state figures look like. Everything below links to the agency or university page it came from.
Rodent species recorded in Maine
- 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.
When rodents are busiest around Scarborough
Year-round; fall peak. Pacific Northwest: roof and Norway rats plus deer mice statewide in Washington.
Based on Scarborough’s humid continental climate profile.
Maine CDC's hantavirus page says the virus is carried by certain rodents, including some rats and mice in the United States, and recommends seal up, trap up, clean up.
Rules that apply in Maine
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: Maine Center for Disease Control & Prevention; CDC; Pest Notes: House Mouse; Pest Notes: Rats. Figures are quoted as the source prints them. How we check our sources
Simple ways to keep rodents away
- Fix leaking hoses, faucets, and irrigation heads.
- Screen foundation and attic vents with quarter-inch hardware cloth.
- Fit garage doors with tight bottom seals and corner guards.
- Inspect vehicle engine bays if parked near fields or woods.
- Take bird feeders down or use catch trays for spilled seed.
- Check crawlspace doors and vents for chewed openings each fall.
A good rodent quote lists the inspection, the number of trapping visits, each opening to be sealed and the material for it, and any cleanup.Did you know?
Around Scarborough, the word rodent comes from the Latin rodere, which means to gnaw.
A house mouse can jump about a foot straight up.
Questions people ask
Why do rodents keep coming back every year?
Usually because the entry points were never sealed. Traps remove the rodents inside. New ones follow the same path in.
Will rodent control harm my pets?
It shouldn't. Traps go where pets can't reach. Bait stations are locked. Tell the company about your pets before they start.
Do ultrasonic repellers work?
Not reliably. Rodents get used to the sound within days. It doesn't pass through walls either. Sealing and trapping work better.
Are rats a bigger problem than mice?
Usually. Rats are bigger, chew more, and avoid new traps for days. They also tend to need more sealing work outside.
How long does rodent control take?
Most jobs take two to four weeks. That covers inspection, sealing and a few trap checks.
Are rodent problems in U.S. homes getting worse?
Not noticeably, on the national numbers. Calculated from the published figures of the U.S. Census Bureau's 2023 American Housing Survey (AHS), about 11.8% of occupied U.S. homes (15.7 million of 133.2 million, rounded) reported rodent signs in the previous year.
How many homes have a full rodent infestation?
In the National Pest Management Association's (NPMA) September 2022 Harris Poll of more than 1,300 U.S. homeowners, 14% reported a multiple-rodent infestation over their lifetime, far fewer than the 37% who recalled a single animal.
Are rodents a problem in Scarborough?
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