The short version
Rodent control requires a combination of rodent-proofing, trapping, and sanitation. For landlords, professional inspection and rodent-proofing are most cost-effective.
- Rodents enter through dime-sized gaps; sealing entry points is critical.
- Fall and winter see peak intrusions; proactive rodent-proofing saves thousands.
- Professional rodent-proofing costs $500-$2,000; trapping $200-$500; attic restoration up to $8,000.
- Rodents gnaw wiring, posing fire risks and costly repairs.
- Ask about inspection fees and follow-up terms before you book.
For landlords, property managers, and real estate investors who own or manage multi-unit residential buildings, single-family rentals, or commercial spaces like restaurants and warehouses. Whether you’re dealing with rodents now or want to keep them out, here’s what you need to know.
What to look for
In rental properties, shared HVAC systems and common areas amplify transmission risks. Moreover, rodents carry diseases—the CDC links them to hantavirus pulmonary syndrome, leptospirosis, and salmonellosis, which can spread through droppings, urine, and saliva. For landlords, the stakes are high: a tenant’s health complaint, a failed inspection, or a fire from gnawed wires can lead to lawsuits, insurance claims, and vacancy loss. Fire Administration, rodents are a recognized fire risk, costing property owners millions annually. According to the U.S. Once inside, they gnaw on wood, drywall, and electrical wiring. Rats are equally persistent: Norway rats can squeeze through a hole the size of a quarter (about 1 inch), and roof rats are agile climbers entering through rooflines and vents. A single pair of house mice can produce up to 60 offspring in a year under ideal conditions. Rodents are prolific breeders.
- 1Droppings: Small, dark, rice-shaped pellets (mice) or larger, capsule-shaped (rats) found along baseboards, in cabinets, or near food sources.
- 2Gnaw marks: Fresh, rough-edged holes in wood, plastic, or wiring; also chewed food packaging.
- 3Grease marks: Dark, oily rub marks along walls or pipes from rodents’ fur brushing surfaces repeatedly.
- 4Nesting materials: Shredded paper, fabric, or insulation in hidden areas like attics, crawl spaces, or behind appliances.
- 5Noises: Scratching, scurrying, or squeaking sounds in walls, ceilings, or under floors, especially at night.
- 6Burrows: Outdoor holes near foundations, under decks, or in compost piles; rats often dig burrows with smooth, hard-packed entrances.
- 7Pet behavior: Cats or dogs staring at walls, sniffing under appliances, or acting agitated near specific areas.
Why it’s worth acting soon
- Structure damage: Rodents gnaw through drywall, insulation, and support beams, weakening the building over time.
- Fire hazard: Chewed electrical wires can short-circuit, causing sparks and fires; rodents are a leading cause of unexplained structure fires.
- Health risks: Hantavirus, leptospirosis, salmonellosis, and rat-bite fever can spread through droppings, urine, or bites; tenants may sue for negligence.
- Higher costs: A small infestation can grow exponentially; treatment costs multiply as rodents spread to multiple units or floors.
Treatment options and typical costs
Rodent-Proofing (Sealing Entry Points)
$500-$2,000
Professional inspection to identify and seal all gaps, cracks, and holes using steel wool, caulk, copper mesh, and heavy-duty sealants. Includes door sweeps, vent covers, and chimney caps.
- Time
- 1-3 days for a typical single-family home; multi-unit buildings may take longer.
- Best for
- Preventing future infestations; essential for landlords with recurring issues.
Trapping (Mechanical Removal)
$200-$500
Placement of snap traps, electronic traps, or live traps in high-activity areas. Baited with peanut butter, dried fruit, or commercial attractants. Technicians check and reset traps over 1-2 weeks.
- Time
- 1-2 weeks; follow-up visits included.
- Best for
- Active infestations in accessible areas; combined with rodent-proofing for best results.
Rodenticide Baiting (Poison)
$300-$800
Tamper-resistant bait stations placed indoors and outdoors, containing anticoagulant baits. Requires multiple visits to monitor and refill. Not recommended for homes with children or pets.
- Time
- 2-4 weeks; bait consumption monitored weekly.
- Best for
- Severe infestations where trapping alone is insufficient; often used in commercial settings.
Attic Restoration & Cleanup
$200-$8,000
Removal of contaminated insulation, droppings, and nesting materials; disinfection; replacement of insulation; repair of chewed wiring and ducts.
- Time
- 1-3 days depending on extent of damage.
- Best for
- Properties with heavy infestations in attics or crawl spaces; restores safety and energy efficiency.
Prices are typical published ranges. Ask what’s included before you compare quotes.
Rats can travel plumbing, so a sink or floor drain with a missing strainer is worth fixing; a tight strainer or grate keeps them out.Health Risks and Legal Responsibilities for Landlords.
A professional company can give you a record of what was found and fixed, which helps if a tenant ever raises a complaint. Document all inspection and treatment efforts, and consider including a pest control clause in leases that requires tenants to report signs immediately and maintain cleanliness. Many states require landlords to respond to pest complaints within a specific timeframe (e.g., 7-14 days). Failure to address an infestation promptly can lead to health code violations, fines, and lawsuits. Tenants may have asthma exacerbated by rodent allergens. In multi-unit buildings, a single infested unit can spread disease through shared ventilation or common areas. Salmonellosis comes from consuming food contaminated with rodent feces. Leptospirosis is transmitted through water contaminated with rodent urine, causing flu-like symptoms and potential kidney damage. Hantavirus, spread by deer mice, can be fatal when inhaled from dried droppings. Rodents can transmit diseases directly (through bites, urine, droppings) and indirectly (via fleas and ticks). Landlords have a duty to maintain habitable premises, which includes controlling pests.
What the numbers say before you hire rodent control.
In Landlords, ask any provider to show you the entry points and the plan before you compare numbers. In Landlords, those three findings — species, entry points, and scale — are what a quote should be built on, not a regional average. In Landlords, 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.
A good inspection starts outside at ground level: door thresholds, the joint between siding and foundation, and anywhere a pipe or cable enters.What affects the price
- Size of property: Larger buildings require more materials and labor for rodent-proofing.
- Severity of infestation: Heavy infestations need more traps, bait stations, and follow-ups.
- Accessibility: Crawl spaces, attics, and tight areas increase labor time and cost.
- Structural repairs: Gnawed wiring, damaged insulation, and holes in walls add to restoration costs.
- Number of units: Multi-unit buildings require coordination and may need treatment of all units.
- Local labor rates: Urban areas and high-cost-of-living regions have higher service fees.
- Urgency: Emergency services or quick appointments usually carry a premium.
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What is the biggest challenge you face with rodent control in your rental property?
When to call for help
If you see multiple signs of rodents—droppings, gnaw marks, nesting materials, or hear scratching at night—call a professional immediately. For landlords, even a single mouse can indicate a larger hidden population. Professional inspection uses specialized tools like borescopes and thermal imaging to find entry points that DIY efforts miss. If you have tenants with health concerns (asthma, allergies) or if the infestation has spread to multiple units, professional treatment is the safer choice. Also call if you’ve tried DIY methods for more than two weeks without success, or if the infestation involves rats, which are more destructive and harder to control than mice.
What you can do yourself
DIY rodent control works for minor, isolated problems—setting a few snap traps or sealing obvious gaps. However, for landlords, the stakes are higher. A DIY approach often misses hidden entry points, leading to re-infestation. Professionals offer comprehensive rodent-proofing, which includes sealing gaps as small as 1/4 inch, installing door sweeps, and screening vents. They also have access to commercial-grade baits and traps that are more effective. The cost of a professional rodent-proofing ($500-$2,000) is often less than the damage a single rat can cause in a year (estimated by the NPMA at $20 billion annually in the U.S.). For rental properties, follow-up visits and a clear record of the work make professional control worth it.
Where you live matters
For example, in coastal areas, sealing against rats often requires heavier materials like hardware cloth, while in arid regions, focusing on plumbing penetrations is key. Understanding your local rodent species and climate helps tailor your approach. Local building codes may require specific rodent-proofing methods, and some municipalities mandate professional pest control for rental properties. For landlords in all regions, fall is the peak season for rodent entry, but in warmer climates, intrusions can occur any time. The Southwest faces pack rats (woodrats) that build large nests and damage vehicles and HVAC units. In the South, the warm, humid weather allows year-round breeding, making prevention critical. The Pacific Northwest sees high roof rat activity due to mild, wet climates that support vegetation. In the Northeast and Midwest, Norway rats are common in urban areas with aging infrastructure, while house mice dominate rural rentals. Rodent problems vary by region.
Simple ways to keep rodents away
- Seal all gaps larger than 1/4 inch with steel wool and caulk; pay attention to pipe penetrations, utility lines, and foundation cracks.
- Install door sweeps on exterior doors; ensure garage doors seal tightly at the bottom.
- Keep vegetation trimmed away from the building; remove woodpiles, debris, and clutter near the foundation.
- Store food (including pet food) in sealed metal or glass containers; take out trash regularly in sealed bins.
- Fix leaky pipes and faucets; eliminate standing water sources like birdbaths or clogged gutters.
- Inspect the roof for missing shingles, gaps around vents, and loose soffits; rodents can climb trees and wires to access roofs.
- In multi-unit buildings, seal gaps around pipes between floors and maintain a clean, clutter-free basement and attic.
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?
Rats are strong swimmers and can squeeze through a hole about the size of a quarter, which is how they turn up in odd places.
A house mouse can jump about a foot straight up and run along a wire like a tightrope.
In Landlords, a rodent's front teeth never stop growing, so it gnaws constantly to keep them worn down.
Questions people ask
How do I know if I have mice or rats?
Look at droppings: mouse droppings are small (1/4 inch), pointed ends; rat droppings are larger (1/2 to 3/4 inch), blunt ends. Mice are smaller (2-4 inches) with large ears; rats are larger (7-10 inches) with smaller ears. Rats are more cautious and may cause louder noises at night.
What is the most effective way to get rid of rodents?
A combination of rodent-proofing (sealing the entry points) and trapping is most effective. Rodent-proofing prevents new rodents from entering, while trapping removes the existing population. Poison baits can be used but carry risks for children and pets.
How much does professional rodent control cost?
Trapping typically costs $200-$500; rodent-proofing (sealing the gaps) costs $500-$2,000; attic restoration can range from $200 to $8,000 depending on damage.
Can rodents cause fires in my rental property?
Rodents gnaw on electrical wires, which can cause short circuits and sparks. The U.S. Fire Administration estimates that rodents are involved in a fire risk.
How often should I inspect my property for rodents?
At least twice a year, ideally in spring and fall. Also inspect after tenant turnovers or if you notice any signs (droppings, gnaw marks). Regular inspections help catch infestations early.
What diseases do rodents carry?
Rodents can transmit hantavirus (through droppings), leptospirosis (via urine in water), salmonellosis (from contaminated food), and rat-bite fever (through bites or scratches). They also carry fleas that can spread plague.
Is it safe to use poison baits in rental properties?
Poison baits pose risks to children, pets, and non-target wildlife. They also cause rodents to die in walls, creating odor and fly issues. Tamper-resistant bait stations reduce risk but are not foolproof. Many professionals prefer traps and rodent-proofing for safety.
How long does it take to eliminate a rodent infestation?
With professional trapping and rodent-proofing, you can see significant reduction in 1-2 weeks. Full elimination may take 2-4 weeks, depending on the severity. Follow-up visits ensure complete removal.
Which U.S. region has the most rodent problems in homes?
In a September 2022 Harris Poll for the National Pest Management Association (NPMA), homeowners in the Northeast were most likely to report having ever encountered rodents, at 53%, followed by the West (52%), the Midwest (51%) and the South (43%). That's from a poll of more than 1,300 homeowners, and the regional differences are modest. Wherever you live, sealing gaps around the foundation and utility lines before cold weather is the most useful step.
Where in the house are mice most often found?
The kitchen leads. In a September 2022 Harris Poll for the National Pest Management Association (NPMA), 37% of U.S. homeowners who had ever encountered rodents said they saw them in the kitchen, followed by the garage or shed (32%), the basement (30%), the backyard (26%) and the living room (17%). Respondents could pick more than one location. Start any inspection behind the refrigerator and under the sink.
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