The Williams County Vector Control District (WCVCD) will be conducting a targeted ground adulticide mission in Williston Spray Blocks 4 and 8 on the evening of June 25, 2025, weather permitting. For safety and effectiveness, it will be rescheduled to later this week if conditions do not allow.
Residents are reminded to please stay at least 300 feet away from a Vector Control truck while it is fogging. WCVCD will be using DeltaGard for this mission (active ingredient: Deltamethrin). DeltaGard is a product approved for use in residential areas by the Environmental Protection Agency (EPA).
The public can view the Spray Block map at https://arcg.is/5KSO50.
For more information about Vector Control, visit: https://www.williamsnd.com/departments/vector-control/ .