The Williams County Vector Control District (WCVCD) will be conducting both aerial and ground mosquito control applications across the county during the week of July 1, 2025, weather permitting. If conditions do not allow, applications will be rescheduled for a later date to ensure safety and effectiveness.
Target areas currently include Trenton and Williston, with a focus on Williston’s Spray Block 8.
Imperium will be used for the aerial treatment, and DeltaGard will be used for the ground treatment. Both products are approved for use in residential areas by the Environmental Protection Agency (EPA).
Residents are reminded to please stay at least 300 feet away from a Vector Control truck while it is fogging.
To view the spray block map, visit: https://arcg.is/1jDn1L
For more information, please visit the Vector Control webpage.