Overview
House mice are the most common rodent pest in NYC apartments, pre-war buildings, and commercial kitchens. A single mouse can squeeze through a hole the size of a dime, and a mated pair can produce 40-50 offspring in a year. By the time most New Yorkers realize they have a mouse problem, the infestation is already inside the walls.
Mice in NYC buildings don't come in one at a time through an open door. They enter through utility penetrations at baseboard radiators, pipe chases under kitchen sinks, gaps around electrical conduits, and structural voids in older masonry. In balloon-frame pre-war buildings, mice can travel from the basement to the top floor through continuous wall cavities without ever entering a visible space.
Effective NYC mouse extermination requires three things working together: sealing every entry point smaller than a quarter inch, treating the wall voids and hidden spaces where mice actually nest, and maintaining trap and bait station pressure until the activity stops completely. Kitchen-only treatments that skip the walls and utility spaces routinely fail because the nest is never addressed. We don't treat just the kitchen.
Get a Free Inspection
Free phone consultation. We'll give you a straight answer before any work starts.
- ✓No obligation to book
- ✓Same-day availability in most of NYC
- ✓Flat-rate quote upfront
- ✓Follow-up visits included
What's Included
Every service includes a thorough inspection and written scope before any work begins.
Full Interior Inspection
Thorough check of kitchens, pantries, cabinets under sinks, radiator chases, wall void access points, and any space with plumbing or electrical penetrations.
Entry-Point Identification
Precise mapping of every gap at pipes, radiator connections, baseboards, outlets, and utility penetrations where mice enter the living space.
Rodent-Proof Sealing
Gaps sealed with steel wool, copper mesh, hardware cloth, and rodent-resistant sealant depending on location and gap size.
Strategic Trap Placement
Snap traps placed along confirmed mouse travel routes — behind appliances, inside cabinet bases, along wall-floor junctions — checked and reset on each visit.
Concealed Bait Stations
Tamper-resistant bait stations placed in locations that mice frequent but pets and children can't access.
Droppings & Nest Removal
Sanitation of active infestation areas, including dropping cleanup and nest material removal with appropriate precautions.
Follow-Up Visits
Return visits to verify traps, check bait station activity, and confirm the population is eliminated before closing out the job.
Prevention Guidance
Practical walk-through of ongoing maintenance steps to reduce re-entry risk — storage practices, maintenance requests, building management coordination.
Our Process
Phone Consultation
Tell us where you're seeing droppings, sounds, or direct sightings. We'll tell you honestly what that pattern suggests about infestation severity.
On-Site Inspection
Full interior walk-through identifying active zones, entry points at utility penetrations, wall void access points, and nesting evidence.
Flat-Rate Quote
One number covering everything: sealing, treatment, and follow-up visits. No hourly charges, no per-visit billing.
Sealing & Treatment
Entry points get sealed first. Then trap and bait station deployment targeting confirmed activity zones, including wall-void spaces.
Follow-Up & Verification
Return visits to confirm elimination, verify seal integrity, and reset any traps still showing activity.
Why It Matters in NYC
Mouse infestations in NYC are structurally different from mouse problems in other cities. The age of the housing stock, the density of construction, and the continuous utility infrastructure create conditions where mice don't just wander in — they're routed in by the building itself.
Pre-war buildings built before the 1940s use balloon-frame construction that leaves continuous vertical cavities inside the walls. A single mouse entering through a basement utility penetration can access every floor in the building without ever passing through a visible gap. This is why kitchen-only treatments — traps under the stove, snap traps behind the fridge — so consistently fail. The nest is inside the wall two floors above the kitchen. You're catching the scouts, not the colony.
Balloon-frame also explains why mouse problems in one unit spread building-wide. Mice don't stay in the apartment they entered. They move through the shared wall voids, setting up nests in the nearest warm, food-adjacent space they can find. An infestation in a ground-floor restaurant can produce visible mouse activity on the third-floor apartment above it within days.
Store-bought snap traps and over-the-counter bait blocks do work — for a single mouse that wandered in from outside. They don't work for established NYC building infestations because the source population in the walls keeps replacing the mice you catch near the kitchen. You need to address the wall voids, seal the penetrations, and maintain pressure long enough to break the breeding cycle.
Distinguishing active from historical mouse activity matters too. Shiny, moist droppings mean active infestation requiring immediate treatment. Old, dry, crumbling droppings indicate past activity. Many apartments we inspect have both — which tells us the property has experienced recurring infestations, usually because the entry points were never properly sealed after the previous treatment.
How to Get Started
Call Us
Free phone consultation. Describe what you're seeing and we'll give you an honest read.
Free Inspection
A technician maps the full property, identifies the species, and finds every entry point.
Flat-Rate Quote
One number covering the full job. No surprises, no hourly billing.
Rodent Species We Address
Effective treatment depends on knowing exactly which species you have.
Service Areas
Frequently Asked Questions
How do you treat mice inside the walls?+
We access wall voids through existing gaps at pipe penetrations, utility chases, and baseboard radiator connections. Bait is placed in these interior spaces where mice actually nest, not just on the surface where they travel. In some cases we recommend drilling small access holes, but only with the property owner's agreement and sealed properly afterward.
How fast do mice breed — will new ones appear during treatment?+
House mice can produce a new litter every 3 weeks. This is why treatment speed matters. We deploy enough trap and bait coverage to outpace the breeding rate, and why follow-up visits are essential — a single surviving pair can rebuild a population within a month.
What size hole can a mouse fit through?+
A mouse can pass through any gap larger than 6mm — roughly the diameter of a pencil. This is smaller than most people expect, which is why post-treatment sealing is so important. We seal every gap we identify regardless of how small it appears.
How do I know if I have mice or rats?+
Droppings are the fastest tell. Mouse droppings are 1/4 inch, pointed at both ends, dark when fresh. Rat droppings are 3/4 inch, capsule-shaped with blunt ends. Noise location matters too — scratching inside walls at night tends to be mice; thumping in a basement or ceiling void is more often rats. Our inspection will confirm which species you have.
Does my whole building need to be treated?+
For apartment buildings, single-unit treatment rarely holds long-term because the source population is in the shared wall voids and common areas. We'll tell you honestly whether building-wide coordination would improve outcomes. We work with building management and landlords regularly.
How do you clean up mouse droppings safely?+
Dried mouse droppings can carry disease, so we don't recommend dry sweeping. We use damp paper towels or a HEPA vacuum for droppping cleanup, dispose of material in sealed bags, and disinfect the area. We walk you through safe cleanup procedures and handle it ourselves if included in the scope.
How long until I stop seeing mouse activity?+
Most residential infestations show significant reduction within 7-10 days of initial treatment. Full elimination typically takes 2-3 weeks across 2-3 visits. Severe infestations in buildings with balloon-frame construction take longer because of the complexity of the wall void treatment.
What if my landlord won't address the mouse problem?+
In NYC, landlords are legally responsible for exterminating rodents in rental properties. We can provide documentation of the infestation and treatment scope that you can use in communications with your building management or housing court if needed.
Ready to End the Problem?
Free phone consultation. Free inspection. Flat-rate quote before any work starts.
Call Now: (212) 555-012324/7 Availability · Same-Day Service · All 5 Boroughs