Aerial Larvicide Treatment Notice

To control mosquitoes, the Middlesex County Mosquito Extermination Commission routinely inspects and treats by helicopter non-residential areas including marshes, wetlands and other large natural areas, which are common habitats for mosquitoes. Granules containing natural bacteria or chemical are dropped from a low-flying helicopter to kill mosquito larvae before they grow into adult mosquitoes. Due to their size and inaccessibility by ground vehicles, these areas are treated when necessary pursuant to heavy rainfall or tidal events.

You may see our helicopter flying over residential areas. However, no applications are made over residential neighborhoods. The pilot is merely positioning the helicopter to approach the wetlands in nearby areas.

To view our aerial treatment locations, please click here.

PLEASE NOTE: THIS IS NOT A "SPRAYING" ACTIVITY.

No precautions are recommended for this treatment. Human exposure to product is very minimal.

Method of Application

Low altitude, granular application using a helicopter over uninhabited wetland areas located throughout Middlesex County.

Mosquito Control Products

• Bacillus thuringiensis israelensis (Bti): a biological larvicide
• Spinosad: a biologically derived larvicide

If conditions are not ideal, treatments will not be conducted. For more information, please contact us.