Black Fly (Gnat) Treatment Schedule

Black Fly (Gnat) Control Program 2021


In compliance with Section 9.10 of the New Jersey Pesticide Control Code (N.J.A.C. Title 7, Chapter 30) notice is hereby given that the Hunterdon County Department of Health (HCDH), Route 12 County Complex Flemington, NJ 08822 will be applying insecticides for the control of larval black flies on an area wide basis in Hunterdon County (South Branch of the Raritan River), as needed, during the period of April 2, 2020 through October 16, 2020.

View and download more information about Vectobac 12AS (PDF)Vectobac 12AS Label Opens in new window

HCHD will also be applying insecticides for the control of adult mosquitoes and black flies, on an area wide basis in Hunterdon County as needed, during the period of April 16, 2020 through October 31, 2020.

The insecticide to be used for larval black flies [with active ingredient (a.i.) Bacillus thuringiensis israelensis] will be Vectobac 12AS. The products to be used in adult mosquito and black fly control could be Fyfanon EW (a.i. malathion), Fyfanon ULV (a.i. malathion), Anvil 2+2 (a.i sumithrin, PBO), Zenivex E4 (a.i. etofenprox, PBO), Zenivex E20 (a.i. etofenprox, PBO) Duet Dual Action Adulticide (a.i. prallethrin, sumithrin, PBO) and Duet HD (a.i. prallethrin, sumithrin, PBO).

Products will be applied by helicopter, truck-mounted or handheld equipment.

All persons interested in obtaining additional information regarding these activities may call the division head, Mr. Tadhgh Rainey (Pesticide License Number 24344B) at 908-788-1351, Rte 12 Complex, Flemington, NJ 08822 or by visiting the Hunterdon County website.

Upon request the pesticide applicator or applicator business shall provide a resident with notification at least 12 hours prior to the application, except for Quarantine and Disease Vector Control only, when conditions necessitate pesticide applications sooner than that time.

For routine health inquiries or pesticide exposure information please contact the National Pesticide Information Center at 800-858-7378.

For emergencies relating to pesticides contact the New Jersey Poison Information and Education System at 800-222-1222.

Contact this number for pesticide regulation information, pesticide complaints, and health referrals 609-984-6568 (NJ Pesticide Control Program).

View and download more information about the Black Fly Control Program (PDF)