County of Monmouth

For Immediate Release:
September 29, 2021

County to combat West Nile Virus
Mosquito Control will spray in Howell on Sept. 30

HOWELL, NJ – The Monmouth County Mosquito Control will be conducting a mosquito spraying on Thursday, Sept. 30 from 4-6 a.m. due to evidence of West Nile virus (WNV) in the area.

The treatment area will include residential streets north of Aldrich Road, west of Route 9, south of I-95 and east of the County border. The County will be spraying “Duet Dual-Action” which contains two pesticides called Prallethrin and Sumithrin, and a synergistic compound called piperonyl butoxide which increases the effectiveness of the pesticides.

“Monmouth County’s Mosquito Control Division will apply a fine mist of Duet using a truck-mounted ultra-low volume mist blower,” said Commissioner Deputy Director Susan M. Kiley. “While spraying is conducted, we caution residents to remain indoors with their windows shut, turn off the intake fan in window air conditioner units, and bring in children’s toys and pet bowls for extra safety precautions.”

Pyrethroids have been recommended for Ultra-Low-Volume (ULV) mosquito control in New Jersey by Rutgers, The State University of New Jersey. The U.S. Environmental Protection Agency’s (EPA) current evaluation considers pyrethroid-containing products to be slightly toxic with minimal potential risk to people when used properly as part of an integrated mosquito control program.

“We want to remind our residents to ‘Fight the Bite’ and take precautions to protect themselves from mosquitos and mosquito-borne diseases,” said Deputy Director Kiley. “Remember to empty any standing water in yards, keep yard toys and wheelbarrow turned over, regularly clear your gutter and use insect repellent that is Environmental Protection Agency registered while outdoors.”

If you would like to read more about the Monmouth County Mosquito Control, go to

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