How to Get Rid of Mice in a NYC Apartment (Queens Renter's Guide)
Finding mice in your Queens apartment? Learn what traps actually work, what your landlord is legally required to do under NYC housing code, and when to call a professional exterminator.
Mice in a Queens Apartment: You're Not Alone
If you've heard scratching behind your kitchen walls, found droppings in your cabinet, or caught a glimpse of something small darting across your floor at 2am, you already know the gut-drop feeling that comes with realizing you have mice. In Queens — one of the most densely populated boroughs in New York City — mice are an extraordinarily common problem, and they're not a sign that you keep a dirty apartment.
They're a sign that you live in New York City.
Mice don't care about your cleaning habits. They care about food, water, and shelter. Queens apartments, especially in buildings constructed before the 1970s in neighborhoods like Jackson Heights, Flushing, Jamaica, Woodside, and Astoria, have the kind of aging infrastructure that gives mice dozens of entry points: gaps around pipes, cracks in foundation walls, deteriorating door frames, and utility chases that run between units like tiny mouse highways.
This guide will walk you through exactly what to do — what works, what doesn't, and what your landlord is legally obligated to handle.
Step 1: Find Out How They're Getting In
Before you set a single trap, you need to understand how mice are entering your apartment. This matters because if you trap every mouse in your unit without sealing entry points, the building's mouse population will simply send replacements.
House mice (Mus musculus) can squeeze through a gap the size of a dime — roughly the diameter of a pencil eraser. In a Queens apartment building, the most common entry points are:
• Around pipes under sinks and behind toilets. The gap between the pipe and the wall is often larger than it looks. This is the #1 entry point in apartment buildings.
• Where the floor meets the wall. Old baseboard gaps and worn door thresholds are frequent culprits.
• Gaps at the bottom of exterior-facing walls. Ground-floor and basement-level apartments are highest risk.
• Through the ceiling. If mice are running through the walls, they may drop down through utility openings above cabinets.
Document what you find. Take photos. This documentation matters for Step 4 when you notify your landlord.
Step 2: Set Traps That Actually Work
Here's the hard truth about mice in apartments: store-bought poison bait boxes (rodenticide) are almost always a mistake in a rental unit. Why? Because poisoned mice often crawl inside walls to die, decompose, and create a smell that lingers for weeks. You also risk accidental poisoning of pets and children, and in New York City multi-unit buildings, you can't control where the poisoned rodent goes before dying.
Snap traps remain the most effective DIY option for apartment use:
• Classic wooden snap traps (Victor M001) — the gold standard. Inexpensive, effective, easy to dispose of.
• Bait: Contrary to popular belief, cheese is not the best bait. Use peanut butter applied in a thin smear, or a small piece of chocolate. The key is a tiny amount firmly attached so the mouse has to trigger the trap to eat it.
• Placement: Set traps along walls, not in the middle of the room. Mice run along baseboards and the edges of spaces. Place traps perpendicular to the wall with the trigger end closest to the wall. Set two traps back-to-back for better coverage.
• Check daily. A dead mouse left in a trap for days reduces trap effectiveness and creates an odor.
In a typical Queens apartment, set traps in the kitchen (under the sink, behind the refrigerator, along the back of cabinet toe-kicks), near the stove, and in any room where you've seen activity.
Step 3: Seal What You Can — Right Now
While you're waiting for your landlord to do their job (more on that in a moment), seal what you can with materials you can get from a hardware store:
• Steel wool stuffed into pipe gaps under sinks — mice cannot chew through steel wool
• Expanding foam around larger gaps in walls (not a permanent fix, but effective temporarily)
• Door sweeps on any exterior-facing or hallway-facing doors with visible gaps underneath
Don't use caulk alone on larger gaps — mice will chew through standard caulk.
Step 4: Your Landlord Is Legally Obligated to Fix This
This is the part most Queens renters don't know well enough. Under NYC Housing Maintenance Code and the NYC Health Code, your landlord is legally required to:
What you should do:
1. Send written notice to your landlord or building super — text or email is sufficient, but written is important for documentation. State that you found mice, describe the evidence (droppings, gnaw marks, sightings), and note the date.
2. File a complaint with 311 if your landlord doesn't respond within a few days. HPD (NYC Department of Housing Preservation and Development) will schedule an inspection. A formal HPD violation for pest infestation is significant leverage.
3. Document everything — photos of droppings, trap catches, entry points. If this goes to housing court (rare, but it happens), documentation is everything.
In Jackson Heights, Flushing, and Jamaica — neighborhoods with large concentrations of older apartment buildings and multi-family housing — HPD issues thousands of rodent-related violations every year. You are not the first person to go through this.
What Doesn't Work
Let's save you some money and frustration:
• Ultrasonic pest repellers — No peer-reviewed evidence they work. If they did, pest control companies would be out of business. They don't work.
• Dryer sheets — A persistent myth. Mice will nest in them.
• Mothballs — Toxic to humans and pets in enclosed spaces, and mice ignore them.
• Poison bait stations left unsecured — Dangerous in apartments with children or pets, and creates dead-in-wall odor problems.
When to Call a Professional
If you've been trapping for two weeks and you're still catching mice consistently, or if you're seeing them during the day (a sign of a large, well-established population), it's time for professional pest control.
In a Queens apartment building, professional rodent control involves:
If your landlord is unresponsive and the infestation is severe, you may be able to hire an exterminator and deduct the cost from rent under NYC "repair and deduct" rules — but consult with a tenant's rights organization before doing this.
FAQ: Mice in Queens Apartments
Q: Does my upstairs neighbor's mice problem affect my apartment?
In a multi-unit building, absolutely. Mice travel freely through wall cavities, ceiling spaces, and pipe chases throughout the entire building. An infestation in one unit is a building problem, not a single-unit problem.
Q: My super set a couple of traps — is that enough?
No. Traps without exclusion (sealing entry points) is a temporary measure. The building needs professional rodent management with structural exclusion to have lasting impact.
Q: I haven't seen mice but I found droppings — do I have mice?
Yes. Mice are nocturnal and avoid human contact. Finding droppings is sufficient confirmation of an active infestation.
Q: I live on the 5th floor. Can mice really get up here?
Yes. Mice are excellent climbers and use building pipes and wall cavities to travel between floors. High-floor apartments are less common but absolutely not immune.
Q: How long does it take to get rid of mice?
With professional treatment and proper exclusion, most Queens apartments see complete resolution within 2-4 weeks. Without exclusion, you'll keep catching mice indefinitely.