Williams County Vector Control District (WCVCD) plans to conduct a ground spray in Williston’s Spray Blocks 7 and 8 after sunset between 7/9/25 and 7/11/25. The missions will be postponed to a later date if conditions do not allow.
To view the Spray Block map, click here: https://arcg.is/1bGqGS1
Zenivex E20 will be used in Block 7, and DeltaGard will be used in Block 8. Both products are approved for residential mosquito control by the Environmental Protection Agency (EPA).
For public safety, residents are advised to maintain a minimum distance of 300 feet from any Vector Control trucks while fogging operations are in progress.
For more information about Vector Control, visit: https://www.williamsnd.com/departments/vector-control/.