Notice of aerial larval control application between July 11 – July 16, 2025

In accordance with 333 CMR 13.04 (7) (a & b), please consider this as notification of the
pending aerial application targeting mosquito larvae in the wetlands in the district.

The Norfolk County Mosquito Control District will be conducting helicopter applications of the biorational larvicide Bti (Bacillus thuringiensis israelensis) to control mosquito larvae.

• Trade name of the granular formulation: VectoBac GS (EPA Reg. No. 73049-10), a biorational larvicide containing Bacillus thuringiensis israelensis (Bti). Please note: this is a granular application, not a spray.

• Application Method: Helicopter

• Target Areas: Specific large wetlands in the following towns:
  Canton, Dedham, Milton, Norwood, Sharon, and Westwood

• Timing: One day between July 11, 2025 and July 16, 2025 (weather-dependent). Due to unpredictable conditions, exact dates cannot be confirmed at this time. Additional notices will be shared as scheduling becomes more certain.

For further information, please contact:
David A. Lawson, Director — (781) 762-3681
or reach out to the Boards of Health in the participating towns.

Additional details are also available at www.norfolkcountymosquito.org.