The Norfolk County Mosquito Control District will begin the 2021 evening ULV aerosol applications on, or about June 1st, weather permitting, but possibly as early as May 24th. The application season usually ends in mid-September.

May 24th through October 22, 2021 - Adulticide aerosol (ULV) applications.(Conducted between sunset and midnight, Monday through Thursday).

If residents wish to know what day of the week spraying may be conducted, visit the district's website here.

Notification of Evening ULV Spraying May 2021 BOH Pesticide Board