What kind of ants are common in NYC apartments?

The most common ants in NYC apartments are pavement ants (small, dark, found along baseboards and in kitchens), odorous house ants (tiny, dark, with a rotten-coconut smell when crushed), and carpenter ants (large, black or red-and-black, found in moisture-damaged wood). In multi-unit buildings, odorous house ants are particularly common because they travel through shared wall voids. Pharaoh ants — tiny, pale yellow insects — appear in larger buildings and are a significant concern in healthcare settings.

How do I tell the difference between ants and termites?

The key differences: ants have a narrow waist (pinched between thorax and abdomen) and elbowed antennae, while termites have a thick, straight waist and straight beaded antennae. Winged ants (swarmers) have two pairs of wings of unequal length; termite swarmers have two pairs of equal-length wings. Both can appear in spring as mating swarms, which is when homeowners most often confuse them. If you find winged insects indoors in spring, collect a sample for professional identification before treating.

Why do ants keep coming back to my NYC apartment?

Ants return to NYC apartments because the colony source — which may be outdoors in the building foundation or in shared wall voids — remains untreated. Treating only the ants you see indoors kills foragers but does not affect the colony. Effective control requires identifying the entry points and nesting location, using appropriate baits that are carried back to the colony, and sealing structural entry points. In multi-unit buildings, coordination with building management is often needed since colonies may span multiple units.

Are carpenter ants dangerous in NYC buildings?

Carpenter ants can cause significant structural damage to NYC buildings by excavating wood galleries for their colonies, but they are slower-acting than termites and require moisture-damaged wood to establish colonies. Finding carpenter ants inside a building almost always indicates a moisture problem — leaking roof, plumbing leak, or poorly ventilated crawl space — that needs to be corrected along with the ant treatment. Prompt professional treatment and moisture source correction prevent further structural damage.

Why should I not spray Pharaoh ants?

Spraying Pharaoh ants with repellent insecticides causes the colony to bud — splitting into multiple smaller colonies that scatter throughout the building. A problem that was confined to one area becomes a building-wide infestation. Pharaoh ants require non-repellent slow-acting gel bait that foragers carry back to the colony and share with other workers and queens. This is the only approach that eliminates the colony rather than dispersing it. Professional treatment by technicians familiar with Pharaoh ant behavior is essential.

Does Control Exterminating treat ant infestations in NYC?

Yes. Control Exterminating treats all common ant species found in NYC, including pavement ants, carpenter ants, odorous house ants, and Pharaoh ants. Treatment protocols differ significantly by species — our technicians perform species identification before recommending a treatment approach to ensure the correct method is used. We serve residential apartments, homes, and commercial properties throughout all five boroughs, Nassau County, and Westchester. Call (212) 696-4164 to schedule service.

Ant Identification NYC: Common Species Guide

From carpenter ants to pavement ants, NYC has numerous ant species. Learn to identify which ants are in your home and how to eliminate each species effectively.

Ant identification in New York City matters because different species require different treatment approaches — and treating the wrong species in the wrong way, or using the wrong products, often makes infestations worse rather than better. NYC and the surrounding metro area host several ant species that commonly infest homes, apartments, restaurants, and commercial buildings. Identifying which species you are dealing with is the essential first step before any treatment decision.

Pavement Ants: NYC's Most Common Ant

The pavement ant (Tetramorium immigrans, formerly T. caespitum) is the ant most commonly encountered by NYC residents. These small ants — about 1/8 inch long, dark brown to black with lighter appendages — build their colonies under sidewalks, beneath building slabs, along foundation walls, and under pavement throughout all five boroughs. Their name comes from their preference for nesting in and around paved surfaces.

Pavement ants enter buildings through cracks in foundation walls, gaps at the base of exterior doors, and through expansion joints in concrete floors. In NYC apartment buildings, they are commonly found in ground-floor units near the kitchen and bathroom, foraging along baseboards and countertops. They eat virtually anything — sweets, proteins, grease, and other insects. Pavement ant swarms (mating flights) occur in June and July, often along sidewalk seams throughout NYC.

Carpenter Ants: The Structural Concern

Carpenter ants (Camponotus pennsylvanicus and related species) are the largest common ant in the NYC area, ranging from 1/4 to 1/2 inch for workers and up to 3/4 inch for queens. They are black or black and red, with a smooth, rounded thorax. Unlike termites, carpenter ants do not eat wood — they excavate it to build galleries for their colonies. The resulting structural damage can be significant in wood-frame buildings in NYC's outer boroughs, Long Island, and Westchester.

In NYC buildings, carpenter ants are found in moisture-damaged wood: window frames, door frames, roof eaves, bathroom walls, and areas with plumbing leaks. The presence of carpenter ants in a building almost always indicates a moisture problem. Finding coarse sawdust (frass) mixed with insect body parts beneath wooden structural elements is a reliable sign of active carpenter ant galleries. Satellite colonies — smaller colonies extending from a main outdoor colony — often establish inside buildings while the parent colony remains in a dead tree or wood pile outdoors.

Odorous House Ants: The Kitchen Invaders

Odorous house ants (Tapinoma sessile) are small (about 1/8 inch), dark brown to black ants that emit a distinctive rotten-coconut odor when crushed. This smell is the easiest identification clue. Odorous house ants form large colonies and readily infest kitchen counters, inside cabinet hinges, and along plumbing lines in search of sweets and moisture. They nest in wall voids, under sinks, and in insulation in NYC apartments and houses.

Odorous house ants are highly mobile and form trailing lines between food sources and nest sites. In multi-unit NYC buildings, they travel between units through shared plumbing walls and electrical conduit openings. They are particularly problematic in spring when colony populations increase and foraging activity intensifies.

Pharaoh Ants: The Healthcare Concern

Pharaoh ants (Monomorium pharaonis) are tiny — about 1/16 inch — pale yellow to light brown, nearly transparent. In most settings they are a nuisance, but in NYC hospitals, nursing homes, and healthcare facilities they are a serious infection control concern: they are documented vectors of Salmonella, Staphylococcus, Clostridium, and Pseudomonas, and have been found in sterile supply rooms and patient areas.

Pharaoh ant colonies are massive — containing hundreds of thousands of workers and hundreds of queens — and they respond to chemical disruption by budding: splitting into multiple smaller colonies that scatter through the building. This means that spraying pharaoh ants with repellent insecticides makes infestations dramatically worse. They require slow-acting bait applied by professionals who understand the species' colony behavior.

Argentine Ants and Fire Ants: Suburban and Regional Species

Argentine ants (Linepithema humile) appear in Nassau County and other Long Island suburbs — they are a common suburban landscape pest that forages indoors from outdoor supercolonies in landscaping. Fire ants (Solenopsis invicta) are not established in NYC proper but have been documented in isolated locations in New Jersey and Long Island's warmer microclimates. Any report of painful stinging ants should be taken seriously and the species confirmed before treatment.

Treatment Approaches by Species

Each ant species requires a different treatment approach:

Pavement ants: Granular bait applied near entry points and along foundation; residual treatment of crack and crevice areas; exterior perimeter treatment
Carpenter ants: Identify and treat the moisture source first; locate and treat satellite colonies with residual injection; treat parent colony outdoors if accessible
Odorous house ants: Non-repellent gel bait inside; exterior perimeter treatment; seal entry points
Pharaoh ants: ONLY non-repellent slow-acting gel bait — never spray or use repellent products; multiple bait stations throughout the infested area; professional treatment essential

Why Choose Control Exterminating?

Control Exterminating has served New York City since 1973 — over 53 years of experience treating every pest NYC throws at us. Our licensed technicians know how pests move through NYC's dense housing stock, aging infrastructure, and commercial corridors. Whether it's German cockroaches spreading between apartment units, Norway rats exploiting the sewer system, or bed bugs hitchhiking through a mid-rise building, we've seen it all and eliminated it all. Call us at (212) 696-4164 or book online for fast, discreet service across all 5 boroughs, Nassau, Suffolk, and Westchester.