Suffolk Spraying Town Salt Marshes for Mosquitoes on Tuesday

Parts of several salt marshes in Islip Town will again be treated, County health officials say.

The Suffolk County Department of Public Works’ Division of Vector Control plans to treat parts of the following salt marshes in Islip Town to control mosquito larvae on Tuesday, September 11, by helicopter, from 5 a.m. to 8 p.m.

They include those at the Robert Moses Coast Guard station, Clam Pond and Heckscher state Park.

(See also the table below, as well as the accompanying PDF file for a full list of affected marshes in Suffolk County.)

This was announced by the Suffolk County Department of Health Services on Monday.

Should weather conditions prevent completion of the work, the will be continued the next suitable day, according to SCDHS officials in a release about the treatment.

The name of the pesticide being applied is altosid liquid concentrate (methoprene), and it'll be applied via a low-altitude, large-droplet liquid application, the release said.

"The products used by Vector Control are registered by the United States Environmental Protection Agency and the New York State Department of Environmental Conservation, and are applied in accordance with the required state and federal permits," according to SCDHS officials in the release.

Officials also said, "No precautions are recommended to prepare for this spraying, as the helicopter will be flying at a very low level over marsh areas and taking other precautions to control drift. Human exposure from this operation is unlikely, and the products involved have no significant human toxicity."

For current and future notices and/or further information:

  • Call the Suffolk County Division of Vector Control at 631-852-4270.
  • Call the Spraying Information Hotline at 631-852-4939.
  • Click here for spray notices.

Town of Islip

Robert Moses Coast Guard Station

Clam Pond
Gardiner Park
Heckscher State Park
Pepperidge Hall


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