Published on July 30, 2026
The County of Morris will be performing an aerial mosquito larvicide over the following municipalities: Chatham, Chatham Township, East Hanover, Florham Park, Hanover, Lincoln Park, Montville, & Parsippany due to high populations of larval mosquitoes in aquatic habitats. The applications will take place via helicopter on 7/31/2026 starting at 6 AM. The insecticide being used is VectoPrime FG (EPA Reg.No. 73049-501) with active ingredients: Bacillus thuringiensis israelensis and (S)-methoprene. More information, including the product label, is available on our website (see below). Please note that mosquito larvae are the immature stage of the flying adult mosquito. Larval habitat is standing water. This operation will NOT be treating adult mosquitoes.
If you have further questions, please feel free to call the Morris County Division of Mosquito Control Division at 973-285-6450, you may also visit our website at: https://www.morriscountynj.gov/Departments/Mosquito-Control