New York City’s four distinct seasons bring more than just wardrobe changes and weather shifts—they also influence pest activity. From rodents in winter to ants in summer, understanding how different pests behave throughout the year can help you stay ahead of infestations before they start.
Here’s a season-by-season breakdown of how pests operate in NYC—and what you can do to keep them out of your home.
Winter: Rodent Invasion
Typical Pests: Mice, rats, cockroaches
As temperatures drop, pests start looking for warm, sheltered places with access to food—and what better place than inside a New York apartment? Rodents are the biggest concern during winter, especially in older buildings with small structural gaps.
Why it happens:
Cold weather drives mice and rats indoors, where they can nest in walls, basements, ceilings, and kitchen areas. Cockroaches, particularly the German variety, are also drawn to warm, humid areas like bathrooms and under sinks.
What to watch for:
- Droppings or grease marks along baseboards
- Scratching noises in the walls, especially at night
- Chewed food packaging or wires
Prevention tips:
- Seal cracks, holes, and gaps using steel wool or metal mesh
- Store food in airtight containers
- Take out the trash frequently and keep kitchen surfaces clean
- Repair any water leaks or drips, especially under sinks
Spring: The Awakening
Typical Pests: Ants, termites, flies, bees
As the city thaws, insect activity picks up quickly. Spring is a transitional season that brings a surge in pest sightings, especially flying insects and ants coming out of dormancy.
Why it happens:
Insects become more active as temperatures rise and begin looking for new nesting spots and food sources. Termites begin swarming during this time, especially after rainfall.
What to watch for:
- Ant trails in kitchens and pantries
- Flying ants or termites near windows or light fixtures
- Increased fly activity, especially near open windows or trash
Prevention tips:
- Eliminate food crumbs and sugary spills immediately
- Repair window screens and install door sweeps
- Keep mulch and soil away from the foundation of your building (for termite prevention)
- Don’t leave pet food out for long periods
Summer: Insects Thrive
Typical Pests: Ants, flies, mosquitoes, roaches, wasps, bed bugs
Summer in NYC means high heat, high humidity—and a whole lot of pests. With longer days and more human activity outdoors, it’s peak season for bugs of all kinds.
Why it happens:
Warm, moist environments are ideal for insect breeding. Increased travel, open windows, and outdoor gatherings all contribute to a spike in pest movement, especially flies, mosquitoes, and bed bugs.
What to watch for:
- Bed bug bites after travel or guests staying over
- Flies around trash bins and kitchens
- Mosquitoes near standing water or shaded outdoor areas
- Roach activity in bathrooms and kitchens
Prevention tips:
- Don’t leave windows open without screens
- Empty standing water from plant trays, buckets, or outdoor containers
- Launder travel bags and clothes in hot water after trips
- Keep garbage tightly sealed and clean bins regularly
Fall: Time to Move In
Typical Pests: Spiders, rodents, stink bugs, cockroaches
As the weather begins to cool, pests begin preparing for winter by seeking shelter indoors. This “invasion phase” typically starts in late September and continues through November.
Why it happens:
Pests sense seasonal changes and begin moving into warmer indoor environments to avoid the cold. Rodents and insects alike may settle in basements, attics, and wall voids.
What to watch for:
- Stink bugs or spiders near windows
- Increased roach sightings as temperatures drop
- Mice activity around storage areas and kitchens
Prevention tips:
- Inspect weather stripping around doors and windows
- Store seasonal items in tightly sealed bins
- Vacuum behind furniture and along baseboards regularly
- Inspect and seal exterior vents and utility entry points
Year-Round Tips for NYC Pest Prevention
While pest activity varies by season, some strategies are effective year-round:
- Keep your space clean and dry. Pests are drawn to food and moisture.
- Inspect regularly. Check for droppings, nests, or unusual odors.
- Reduce clutter. Cardboard, paper, and fabric offer ideal nesting spots.
- Report issues quickly. If you rent, inform your landlord or property manager at the first sign of pests.
Final Thoughts
In New York City, seasonal pest behavior follows a predictable pattern—but infestations can still catch you off guard if you’re not prepared. By understanding when and why different pests become active, you can take proactive steps to protect your home all year long.
From winter rodents to summer insects, every season presents its own challenges. The good news? With a little preparation and vigilance, you can enjoy your home without unwanted visitors—no matter what the weather brings. We recommend pest control in new york.