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.
- In Tigard, 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 Tigard 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.
- 1Bait or pet food vanishing from bowls overnight.
- 2Gnaw marks on food packaging, wood trim, or wiring.
- 3Disturbed insulation or tunnels in the attic.
- 4A musky or ammonia-like smell in closed rooms.
- 5Fresh gnaw marks on door corners or garage weatherstripping.
- 6Food scattered or hollowed-out fruit and nuts.
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.
- Deer mice can carry hantavirus.
Treatment options and typical costs
Inspection and Entry-Point Mapping
$75–$250
Expect a flashlight, a mirror, and a lot of crouching. In Tigard 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
Attic and Crawlspace Cleanup and Sanitation
$500–$3,000, higher if insulation is replaced
Not every Tigard infestation needs a full cleanup; a few droppings can be cleaned with gloves and disinfectant. Heavy contamination across an attic is a different job entirely.
- Time
- Half day to two days
- Best for
- Heavy contamination; odor, urine-soaked insulation, nesting
Snap-Trap Program
$150–$400 per visit
Snap traps remain the workhorse for rodents inside Tigard homes because a caught rodent is proof, not a guess. A Tigard 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
Tamper-Resistant Exterior Bait Stations
$100–$300 setup, $40–$80 per service visit
Bait stations belong outside, not in the attic. A Tigard pro places them along fence lines, near sheds, and beside foundations where rats travel, then services them monthly or quarterly.
- Time
- 30–45 minutes per visit, ongoing
- Best for
- Outdoor rat pressure; ongoing perimeter protection
Prices are typical published ranges. Ask what’s included before you compare quotes.
Crawl spaces are where rats and mice get comfortable. Vent screens, the sill plate and any gap around pipes are worth a careful look.Which rodents live around Tigard.
House mice are the most common rodent in Tigard homes. They're small, curious and breed quickly. Norway rats are the other usual suspect. They burrow along foundations and enter low. Roof rats turn up in parts of Oregon. They climb and come in high, through attics and rooflines. Deer mice live around Tigard too, mostly near open land and in sheds or cabins. They can carry hantavirus, so clean up their droppings carefully.
When they move in.
Small problems grow fast. Check for gaps before then. Spring is breeding season.
A metal vent cover with a working flap keeps mice out all winter. Plastic flaps crack in the cold and get chewed open.How they get into houses here.
For roof rats, check soffit vents, gable vents and eaves. Trim branches back from the roof. A lot of houses around Tigard have crawl spaces, and crawl vents and access doors are the usual way in. Check that vent screens are intact. Make sure the crawl door closes tight. Look for gaps where pipes and wires pass through the floor. Homes from Tigard out to Beaverton and Lake Oswego share the same weak spots, so the checklist below works across the area.
A year of rodents in Tigard.
- Winter: with lows near 36°F in Tigard, check the attic, garage and pantry for droppings. - Spring: breeding season. Act on any sign quickly. - Summer: with highs around 80°F in Tigard, rodents look for water. Fix drips and leaks. - Fall: mice move indoors as nights cool. Seal gaps in September.
Mice or rats?
- Holes: mice chew dime-sized holes. Rats chew holes closer to quarter-sized. - Sounds: mice sound light and quick. Rats sound heavier. - Behavior: mice are curious about new traps. Rats avoid them for days. - Rub marks: rats leave greasy smudges along walls and beams. - Droppings: mouse droppings are rice-sized. Rat droppings are two or three times bigger.
Sealing small gaps yourself.
- Sealant or mortar: cover the mesh so it stays put. - Hardware cloth: use quarter-inch mesh over vents and larger holes. - Door sweeps: close the gap under garage and exterior doors. - Expanding foam: fine on top of mesh, useless on its own. - Check your work: daylight through a gap means it isn’t sealed. - Steel wool or copper mesh: pack it into small gaps first.
Cleaning up droppings safely.
- Wear rubber or plastic gloves. - Spray droppings with a bleach solution, then wait five minutes. - Wipe up with paper towels and bag them. - Don’t sweep or vacuum droppings dry. It stirs up dust. - Wash your gloved hands, then your hands. - Air the room out for 30 minutes first.
What happens at an inspection.
The inspector walks the outside first. They check the foundation, vents, rooflines and utility gaps. Inside, they check the kitchen, garage and attic. They'll also check the crawl space. You should come away with a list of entry points. Photos help. Most inspections take about an hour.
Rodents in the car.
Check the air filter box for nesting. Clear birdseed and pet food from the garage. Mice and rats nest in engine bays and chew wiring. Park in a closed garage when you can.
Bird feeders and rodents.
If rodents show up, bring feeders in at night. Store seed in a metal can with a tight lid. Spilled seed feeds mice and rats. Use a seed tray and sweep up spills.
Questions to ask before you sign.
- Which gaps will you seal, and with what? - How many trap visits are included? - What happens if they come back? - Is cleanup included, or extra? - Will you use poison inside? (Ask them not to.) - Where are they getting in?
Rodents by the numbers.
National surveys set rough expectations but cannot diagnose one house. In Tigard, what actually matters is a walk-through: where the droppings are, how the rodents are getting in, and how large the colony is. In Tigard, those three findings — species, entry points, and scale — are what a quote should be built on, not a regional average. In Tigard, ask any provider to show you the entry points and the plan before you compare numbers.
What affects the price
- Follow-up visits included versus billed separately.
- Emergency or short-notice scheduling.
- Local labor rates and licensing costs.
- Attic access and how much insulation is contaminated.
- Number of entry points found during inspection.
- Number of trapping visits needed to reach zero.
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What's your biggest concern about rodents?
When to call for help
Attic cleanup is hard to do safely without training. They take a longer, more careful approach. Call right away if you see rats. So is a dead-rodent smell. Droppings in several rooms are another sign. Call if you hear them in the attic or walls.
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 Tigard
In Tigard's neighborhoods, woodpiles, fences, bird feeders and gardens draw rodents close to the house. A typical home in Tigard is worth around $545k, and chewed wiring or soiled insulation can get expensive. With about 40 inches of rain a year, Tigard gives rodents plenty of water, so food and shelter are what you control. Winter lows average around 36°F in Tigard, and that cold is what sends mice looking for a way in.
Local research
Rodents in Tigard, OR: what the public record shows
Before you compare quotes, it helps to know which rodents actually live in Oregon, when they are busiest around Tigard, and what the state figures look like. Everything below links to the agency or university page it came from.
Rodent species recorded in Oregon
- Norway rat (Rattus norvegicus) — Burrowing rat of basements, sewers and ground floors; tail shorter than head plus body.
- Roof rat (Rattus rattus) — Climber of attics and trees in warm and coastal regions; tail longer 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 Tigard
Fall entry (Sept-Nov). Norway rats and house mice move indoors as temperatures drop.
Based on Tigard’s mediterranean climate profile.
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: CDC National Notifiable Diseases Surveillance System; CDC; Pest Notes: Rats; Hantavirus. 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.
- Take bird feeders down or use catch trays for spilled seed.
- Screen foundation and attic vents with quarter-inch hardware cloth.
- Keep ivy, shrubs, and firewood away from the foundation.
- Seal the gap where the garage slab meets the wall.
- Install brush or rubber door sweeps on exterior doors.
In a multi-unit building, mice move between apartments through shared walls and pipe chases, so treating one unit rarely solves it. Ask for a building-wide plan.Did you know?
In Tigard, the word rodent comes from the Latin rodere, which means to gnaw.
In Tigard, rats are strong swimmers and can tread water for a long time, which is why they sometimes travel sewer lines.
Questions people ask
How do I know if I have mice or rats?
Mouse droppings are about the size of a rice grain. Rats also chew larger holes and sound heavier at night. Check the droppings.
Will rodent control harm my pets?
Bait stations are locked. Tell the company about your pets before they start. It shouldn't. Traps go where pets can't reach.
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.
What does a rodent inspection involve?
Inside, they look at the kitchen, attic, garage and under sinks. You should get a list of entry points. The inspector checks the outside walls, roofline, vents and utility gaps.
Will rodents leave on their own?
Rarely. Once they've found food, water and a warm nest, they stay.
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.
Do wealthier homes get fewer mice and rats?
In Tigard, in the National Pest Management Association's (NPMA) September 2022 Harris Poll of more than 1,300 U.S. homeowners, 52% of those earning $100,000 or more said they had ever had a rodent problem, slightly above the 49% for homeowners overall. Not according to homeowner surveys.
Are rodents a problem in Tigard?
They're common here, as almost everywhere. House mice cause most problems.
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 Rodent Exterminator · Updated September 11, 2026 · How we write these guides