Mice & Rats
Medium RiskCommon household rodents that seek shelter indoors during colder months. They can cause significant property damage and pose health risks.
Overview
Mice and rats are among the most common household pests in the Boston area, especially during fall and winter when they seek warm shelter. These rodents are highly adaptable and can squeeze through surprisingly small openings. A single mouse can produce up to 60 offspring per year, making early detection crucial.
Signs of Mice & Rats
Droppings
Small, dark pellets (1/8 to 1/4 inch) found near food sources, in drawers, or along walls
Gnaw marks
Fresh gnaw marks are lighter in color and become darker as they age. Found on food packaging, wood, or wires
Scratching sounds
Nocturnal scratching or scurrying sounds in walls, ceilings, or under floors, typically at night
Nests
Shredded paper, fabric, or plant matter gathered in hidden areas like behind appliances
Grease marks
Dark, greasy rub marks along walls and baseboards where rodents travel repeatedly
Tracks and runways
Dusty areas may show footprints or tail drag marks. UV light can reveal urine trails
Risks
Health Risks
- Hantavirus:A serious respiratory disease transmitted through contact with rodent droppings, urine, or saliva
- Salmonella:Food poisoning caused by consuming food contaminated by rodent feces
- Leptospirosis:Bacterial infection spread through contact with water contaminated by rodent urine
- Allergies & Asthma:Rodent dander, droppings, and urine can trigger allergic reactions and asthma attacks
Property Risks
- •Electrical fires from gnawed wires
- •Structural damage from gnawing on wood and insulation
- •Contaminated food supplies
- •Damaged personal belongings
- •Unpleasant odors from urine and droppings
DIY Treatment Options
Seal entry points
Close gaps larger than 1/4 inch with steel wool, caulk, or metal flashing. Pay attention to areas where pipes and wires enter the home.
Remove food sources
Store food in airtight containers, clean up crumbs immediately, and secure garbage in sealed bins.
Set traps
Place snap traps or electronic traps along walls where you've seen signs of activity. Use peanut butter or chocolate as bait.
Eliminate water sources
Fix leaky pipes and faucets. Remove standing water and ensure proper drainage.
Reduce clutter
Minimize hiding spots by organizing storage areas and keeping items off the floor.
When to Call a Professional
- You see multiple mice or signs of a large infestation
- Droppings appear in multiple areas of your home
- DIY methods haven't worked after 2 weeks
- You can't locate entry points
- You have a rat problem (rats are more dangerous and harder to eliminate)
- You're dealing with mice in a business or commercial setting
Prevention Tips
- Inspect your home's exterior twice yearly for potential entry points
- Keep vegetation trimmed away from your home's foundation
- Store firewood at least 20 feet from your house
- Install door sweeps on exterior doors
- Keep your kitchen clean and food properly stored
- Regularly check rarely-used areas like attics and basements
Frequently Asked Questions
How do mice get into my home?
Mice can squeeze through openings as small as a dime (1/4 inch). Common entry points include gaps around pipes, cracks in foundations, gaps under doors, and openings around utility lines.
Are mice dangerous?
Yes, mice can transmit diseases through their droppings, urine, and saliva. They can also trigger allergies and asthma, and cause property damage by gnawing on wires and structures.
How long does it take to get rid of mice?
With consistent trapping and exclusion efforts, you can significantly reduce a mouse population within 1-2 weeks. Complete elimination may take 4-6 weeks or longer depending on the severity of the infestation.
Estimated Cost (Boston Area)
Initial treatment in Boston area. Recurring treatments may cost $50-100/month.
Boston Area Info
October through March
Older homes in neighborhoods like Back Bay, South Boston, and Cambridge are particularly susceptible due to aging infrastructure.
Massachusetts law requires landlords to provide pest-free housing. Tenants should document issues and notify landlords in writing.
Need Professional Help?
Connect with licensed pest control professionals in Boston.
Find Local ServicesContact Us