The Williams County Vector Control District will be conducting truck mounted adulticide treatments between 6/6/25-6/9/25 in Williston (Spray Block 8). Weather and conditions permitting, treatments will occur near sunset. Find this information and a map of the WVCD Spray Blocks at https://www.williamsnd.com/spray-reports/.
Please maintain a distance of at least 300 feet behind Vector Control trucks when they are fogging.
The WCVCD uses Zenivex E20 for adult mosquito control treatments (adulticides), which contains the active ingredient Etofenprox. Zenivex E20 is a product approved for use in residential areas by the Environmental Protection Agency (EPA).
To avoid mosquito bites, residents are advised to take extra precautions when spending time outdoors during the hours of dusk to dawn during the summer months. Wearing long sleeve tight knit shirts and long pants, limiting time outdoors during these times, and using a mosquito repellent such as DEET, Picardin, or oil of lemon eucalyptus are good actions to take to prevent bites. Residents can help prevent mosquito re-population by eliminating standing water on their property.
For more information, please visit www.williamsnd.com/department/vector-control