How to Get Rid of Roaches in a NYC Apartment (What Actually Works)

⏱ 6 min read

Quick answer: Getting rid of roaches in an apartment is different from a house, because in a building the roaches are usually coming from somewhere you can’t reach — a neighboring unit, a shared wall, or the trash and utility chases. Spraying the roaches you see rarely works, because German cockroaches breed fast and their egg cases resist most sprays. What actually works is gel baiting plus an insect growth regulator (IGR), tight sanitation, sealing the gaps roaches travel through, and — critically — getting the source unit treated. In NYC, that last part is often your landlord’s legal responsibility.

Why roaches keep coming back in an apartment

Almost every stubborn apartment roach problem is a German cockroach problem. German roaches are small, tan, and astonishingly prolific: a single female and her offspring can produce hundreds of roaches in a few months, and she carries her egg case (the ootheca) until just before it hatches — which is why spraying kills the roaches you see but leaves the next generation intact inside protected egg cases.

In a house, you can treat the whole structure. In an apartment, you’re one unit inside a shared system. Roaches move through wall voids, plumbing and pipe chases, shared cabinetry, and gaps around outlets. If the real nest is in the apartment next door or below you, you can keep your kitchen spotless and still see roaches, because they’re commuting in. That’s the single biggest reason apartment roach problems feel impossible: you’re treating a symptom in your unit while the source sits somewhere else.

What actually works (and what doesn’t)

Skip the foggers and “bombs.” Total-release foggers scatter roaches deeper into wall voids and rarely reach the harborages where they actually live. Skip perimeter spraying as your main tool, too — for German roaches it underperforms and can make baiting less effective.

The professional approach for German cockroaches is built on two things:

• Gel bait, placed precisely. Roaches eat it, return to harborage, and it spreads through the population (including roaches you never see). Placement matters more than quantity — inside the hinges of cabinets, behind the stove and fridge, along the edges of drawers, near plumbing.
• An insect growth regulator (IGR). This interrupts the life cycle so the eggs and nymphs that survive the first round can’t mature into breeding adults. Without an IGR, the population rebuilds; with it, the cycle collapses over a few weeks.

This is exactly the logic behind our German cockroach Trio Protocol — a non-repellent, multi-part treatment that targets the adults, the developing stages, and the harborage at once, instead of chasing the roaches you can see.

The tenant playbook: what you can do this week

1. Cut off food and water. Roaches can live on crumbs and grease. Wipe counters and the stovetop nightly, store food and pet food sealed, take out trash daily, and fix drips — German roaches are drawn to moisture under the sink and behind the fridge.
2. Declutter harborage. Cardboard, paper bags, and clutter under the sink are prime nesting spots. Recycle cardboard promptly; it’s a favorite hiding and egg-laying material.
3. Seal the highways. Caulk gaps around pipes under the sink, behind the stove, and along baseboards. Add foam gaskets behind outlet and switch plates on shared walls. This slows the roaches commuting from adjacent units.
4. Use gel bait, not spray. If you DIY, place small dabs of a roach gel bait in cabinet corners, behind appliances, and near plumbing — and do not spray over your bait, which repels roaches away from it.
5. Watch where they concentrate. Note the room and the exact spots (usually the kitchen and bathroom). That map tells a professional — and your building — where the source likely is.

Get the source unit treated — and know your rights

Because German roaches spread between units, treating only your apartment is often a losing battle. In New York City, pest control in a rental is generally the landlord’s responsibility — the NYC Housing Maintenance Code requires owners to keep units free of pests and to address infestations, with specific rules requiring landlords to provide information about and remediate infestations. Practically, that means you can (and should) report the problem in writing to your landlord or managing agent and ask for building-level treatment, especially of adjacent units, not just yours. A serious building treats the block of units around the infestation, not a single apartment.

If you’re a landlord or managing agent reading this: treating one complaining unit at a time is why roaches never leave your building. Coordinated, source-focused treatment is cheaper over a year than repeat single-unit visits.

When to call a professional

Call sooner rather than later if you’re seeing roaches during the day (a sign of a heavy population), seeing them in multiple rooms, finding egg cases or a musty odor, or if the problem returns within weeks of a DIY attempt. A professional can confirm it’s German cockroaches, find the harborage and likely source, and apply a coordinated bait-plus-IGR program that DIY products can’t match. For what treatment costs in the city, see our NYC cockroach treatment cost guide, and for why the German roach is a specialty of ours, see why NYE is NYC’s go-to for German cockroaches.

Frequently asked questions

Why do I still have roaches when my apartment is clean?

Because in a building the source is often not your unit. German cockroaches travel through shared walls, plumbing chases, and cabinetry from a neighboring apartment or a common area. A spotless kitchen reduces what feeds them, but it won’t stop roaches that are nesting next door and commuting in — which is why building-level, source-focused treatment matters.

Do roach bombs or foggers work in an apartment?

Generally no. Foggers coat exposed surfaces but don’t reach the wall voids and tight harborages where German roaches live, and they can drive roaches deeper or into neighboring units. Precise gel baiting plus an insect growth regulator is far more effective.

How long does it take to get rid of roaches in an apartment?

A well-run bait-and-IGR program usually shows a sharp drop within a couple of weeks and strong control over about three to six weeks, as the growth regulator shuts down the next generation. Heavier or building-wide infestations take longer and need the source unit addressed, not just yours.

Is my landlord responsible for roaches in NYC?

In most NYC rentals, yes — the Housing Maintenance Code makes owners responsible for keeping units pest-free and remediating infestations. Report the problem in writing and ask for treatment of the surrounding units, not just yours. Keep copies of your requests.

What kills roaches permanently?

No single product is “permanent,” because reintroduction is always possible in a building. Lasting control comes from collapsing the current population with bait and an IGR, and then removing what supports them — food, water, harborage, and the gaps they travel through — plus treating the source. That combination is what keeps them from rebuilding.

Are the treatments safe around kids and pets?

Professional German roach work relies on targeted gel bait and growth regulators placed in cracks, voids, and out-of-reach harborage rather than broadcast spraying, and a licensed applicator follows the product label and re-entry directions for every material used. Always ask your provider what’s being applied and where.

Reviewed by Jorge Bedoya, Associate Certified Entomologist (ACE) — owner of New York Exterminating, NYSDEC Reg. #15140. NYE is NYC’s German-cockroach specialist, ACE-led and bilingual, serving all five boroughs. Free inspection: (347) 210-4646. This article is general information, not legal advice; for your specific rights as a tenant, consult the NYC housing rules or a tenant advocate.