The short version
Trap the ones inside, then seal the gaps. Around Lewisville, check the roofline too, since roof rats come in high. An inspection usually costs $75–$250.
- Look for droppings, gnaw marks and night-time scratching.
- In Lewisville, mice usually start moving indoors in November and December, as nights get colder.
- Traps remove them; sealing keeps them out.
- Never sweep or vacuum droppings dry.
Homeowners, renters and landlords in Lewisville 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.
- 1Fresh gnaw marks on door corners or garage weatherstripping.
- 2Droppings in drawers, pantries, under sinks, or along walls.
- 3Chewed holes in the bottom of cabinets or drawers.
- 4Food scattered or hollowed-out fruit and nuts.
- 5Rodent hair or droppings inside HVAC ducts.
- 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
First, the pro maps where rodents get in. That map guides the traps and sealing.
- 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
Many include one or two follow-up visits. Beyond that, monitoring becomes a quarterly plan, which makes sense mainly for Lewisville homes with steady outdoor pressure.
- Time
- 20–40 minutes per visit
- Best for
- Confirming the house stays clear after treatment
Attic and Crawlspace Cleanup and Sanitation
$500–$3,000, higher if insulation is replaced
Expect them to bag, seal and haul away the waste. In Lewisville, a thorough attic restoration also includes checking ductwork and wiring the rodents may have chewed.
- Time
- Half day to two days
- Best for
- Heavy contamination; odor, urine-soaked insulation, nesting
Tamper-Resistant Exterior Bait Stations
$100–$300 setup, $40–$80 per service visit
Locked bait stations around a Lewisville home's perimeter reduce the outdoor rat population before it reaches the walls. Anchored and locked, they keep children, pets, and wildlife out.
- 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.
Roof rats and mice love attic insulation. Tunnels through the fluff, flattened runways and droppings along the eaves are the signs to look for.Which rodents live around Lewisville.
House mice are the most common rodent in Lewisville homes. They're small, curious and breed quickly. Norway rats are the other usual suspect. They burrow along foundations and enter low. Roof rats are common around Lewisville too. They climb, and come in high through attic vents and branches.
When they move in.
Check for gaps before then. Roof rats are active all year. Listen for them in the attic after dark. Spring is breeding season. Small problems grow fast.
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.
Many homes in Lewisville sit on slabs. Garage seals, brick weep holes and pipe gaps are typical entries. Check the bottom corners of the garage door. Look behind the washer and under sinks. Daylight under a door means a gap. Homes from Lewisville out to Carrollton and Frisco share the same weak spots, so the checklist below works across the area. For roof rats, check soffit vents, gable vents and eaves. Trim branches back from the roof.
A year of rodents in Lewisville.
- Winter: with lows near 36°F in Lewisville, check the attic, garage and pantry for droppings. - Spring: breeding season. Act on any sign quickly. - Summer: with highs around 96°F in Lewisville, rodents look for water. Fix drips and leaks. - Fall: rodents look for shelter. Seal gaps before cold nights arrive.
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.
Inside, they check the kitchen, garage and attic. You should come away with a list of entry points. Photos help. Most inspections take about an hour. The inspector walks the outside first. They check the foundation, vents, rooflines and utility gaps.
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 Lewisville, what actually matters is a walk-through: where the droppings are, how the rodents are getting in, and how large the colony is. In Lewisville, those three findings — species, entry points, and scale — are what a quote should be built on, not a regional average. In Lewisville, ask any provider to show you the entry points and the plan before you compare numbers.
What affects the price
- Sewer line inspection if rats are entering underground.
- Whether sheds, garages or other outbuildings are included.
- Outdoor pressure from creeks, alleys, or restaurants nearby.
- Follow-up visits included versus billed separately.
- Attic access and how much insulation is contaminated.
- Whether insulation must be removed and replaced.
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What's your biggest concern about rodents?
When to call for help
Call if you hear them in the attic or walls. Droppings in several rooms are another sign. So is a dead-rodent smell. Call right away if you see rats. They take a longer, more careful approach. Attic cleanup is hard to do safely without training.
What you can do yourself
Start tonight with snap traps along the walls. Bait them with peanut butter. Store food in sealed bins. Seal small gaps with steel wool and sealant. Rooflines, vents and attics are harder. That's where a pro's sealing work pays off.
Rodents in Lewisville
Winter lows average around 36°F in Lewisville, and that cold is what sends mice looking for a way in. In Lewisville's neighborhoods, woodpiles, fences, bird feeders and gardens draw rodents close to the house. With about 38 inches of rain a year, Lewisville gives rodents plenty of water, so food and shelter are what you control.
Local research
Rodents in Lewisville, TX: what the public record shows
Before you compare quotes, it helps to know which rodents actually live in Texas, when they are busiest around Lewisville, and what the state figures look like. Everything below links to the agency or university page it came from.
Flea-borne (murine) typhus cases reported in Texas, 2008-2025
Texas reports more flea-borne typhus than any other state; rats and their fleas are the natural reservoir.
Texas Department of State Health ServicesRodent species recorded in Texas
- 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.
- 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.
Rat control in Texas is a flea-borne typhus issue as much as a structural one, so flea treatment goes with rodent removal.
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: Texas Department of State Health Services; 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
- Keep garbage in lidded cans and pick up fallen fruit.
- Store pet food and birdseed in sealed metal containers.
- Insert metal weep-hole guards in brick veneer.
- Keep grass short and remove tall weeds along fences.
- Store pantry staples in glass or hard plastic.
- 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?
In Lewisville, rodents make up about 40 percent of all mammal species on Earth.
A house mouse can jump about a foot straight up.
Questions people ask
Do I need to replace attic insulation?
Light activity can often be cleaned up. Ask the inspector to show you before you agree to replacement. Only if it's heavily soiled or flattened by nesting.
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.
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 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.
Are rats a bigger problem than mice?
Rats are bigger, chew more, and avoid new traps for days. Around Lewisville, roof rats often nest in attics, so check the roofline too. Usually.
Do homes with rodents usually have other pests too?
homes reported both rodents and cockroaches in the U.S. Census Bureau's 2019 American Housing Survey (AHS), a signal about shared entry points. When you get quotes in Lewisville, ask each company what they usually see in your neighborhood. Often enough to matter. Pests tend to travel together, and 2.9 million occupied U.S.
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. A good pro in Lewisville will explain how their plan fits what they found at your home. Not necessarily. It deserves a look.
Are rodents a problem in Lewisville?
They're common here, as almost everywhere. Roof rats are also common in the area.
Sources (5)
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