The Williams County Vector Control District (WCVCD) will be conducting a ground adulticide treatments between 6/24/2025 – 6/30/2025 in Trenton and Williston Spray Blocks 3 and 7. Weather permitting, the treatment will occur near sunset. Please maintain a distance of at least 300 feet behind Vector Control trucks when they are fogging.
The WCVCD will be using DeltaGard, which contains the active ingredient deltamethrin, for the treatment. DeltaGard 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.
To view the Spray Block area for Williston, please view the map here.
For more information, and a list of all notices, please visit the Vector Control website.