Mosquitoes are active in New York City from April through October. During this time, mosquitoes look to lay their eggs in slow-moving or standing water.
Most mosquitoes you see in the city do not carry disease. Only a few mosquitos species in New York City may carry and spread West Nile virus.
Diseases spread by mosquitoes in areas outside the city include:
Learn more about how New York City monitors the mosquito population.
Avoid mosquitoes in the city by following these tips:
Protect Your Home
Mosquitoes lay their eggs in slow-moving and standing water. To make your home less inviting, be sure to:
You can report chronic standing water in private or public locations online or by calling 311. You can report water in the street caused by a street defect or a clogged catch basin online or by calling 311.
Treat water that can’t be removed with larvicide, a product that kills young mosquitoes. Use larvicides with the active ingredient Bti. You can find products at your local hardware store. Larvicides should be used only as directed by the manufacturer.
Never use foggers or bug bombs inside the home to control insects. You should also avoid using aerosol pesticides.
Before you travel, visit the CDC Traveler’s Health website to find out what mosquito-related diseases are active in your destination.
If you are visiting areas with a high risk of mosquito-borne illness:
Your Guide to Safe and Healthy Travel (PDF)
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