When is mosquito season in New York City?
Mosquitoes are generally active from April through October.
Is there a specific time of day when mosquitoes are most active?
Mosquitoes tend to be most active, and tend to bite more, between dusk and dawn, especially the species that can transmit West Nile virus.
Should I take personal precautions against mosquito bites during the day?
It is not necessary to take personal precautions during the day when mosquitoes are much less active. However, long pants, loose-fitting, long-sleeved shirts and socks should be worn during the day in areas where there are weeds, tall grass, or bushes. In addition, insect repellents containing the active ingredients DEET, picaridin, IR3535, or oil of lemon eucalyptus helps people reduce their exposure to mosquito bites that may cause West Nile virus. For more information, see the Insect Repellant Use and Safety Fact Sheet. Taking these precautions will minimize the possibility of exposure to mosquitoes.
Should I stay indoors and limit outdoor activities?
It is not necessary to limit outdoor activities but precautions should be taken from dusk to dawn when mosquitoes are most active.
What can I do to reduce my risk of becoming infected with West Nile virus?
From June through October, when mosquitoes are most active, take the following precautions:
What can I do around my home to help reduce exposure to mosquitoes?
Mosquitoes lay their eggs in standing or slow moving water. Also weeds, tall grass, and bushes provide an outdoor resting place for mosquitoes. In residential areas, standing water can accumulate in unused tires, cans, unused pools and pool covers and other receptacles that collect water. Mosquitoes can enter homes through unscreened windows or doors, or broken screens. Eliminate standing water and prevent mosquitoes from entering your home:
Some local hardware stores may carry a product called Mosquito Dunk® that contains a larvicide - Bacillus thuringiensis israelensis (BTI) - for use in areas of standing water around the home. The New York City Department of Health and Mental Hygiene recommends eliminating standing water around the home to reduce breeding sites for mosquitoes and warns that direct handling of larvicides may cause skin and eye irritation. Use these products only as directed by manufacturer. If these products are purchased for home use, we recommend careful reading of the hazards label, directions, and details regarding storage and handling.
How will the public be notified in advance about spraying activities?
Residents can learn about adulticiding schedules in advance through public service announcements, the media, the online Mosquito Spraying Events Schedule, or by calling 311. DOHMH will provide notification at least 24 hours prior to a spray event.
If the City sprays pesticides, what should I do during the spraying?
If spraying occurs in an area where you are, DOHMH recommends that all individuals take the following precautions to avoid direct exposure to pesticides and to reduce the risk of any reactions to pesticides:
Anyone experiencing adverse reactions to pesticides should seek medical care or call 311 or the NYC Poison Control Center at (212) POISONS (764-7667) .
For more information on West Nile virus, call 311 or visit nyc.gov/health/wnv.