8/26/2025: The Williams County Vector Control District (WCVCD) is planning to conduct ground adulticide treatments in Grenora, Ray, and Williston Block 13 using DeltaGard on Tuesday, August 26, 2025. Residents are reminded to maintain a distance of at least 300 feet from Vector Control trucks during fogging operations.
An aerial treatment, using Imperium, will be conducted for all other Williston blocks on Wednesday, August 27, 2025.
Weather permitting, all treatments will occur after sunset.
DeltaGard (active ingredient: Deltamethrin) and Imperium (active ingredient: Deltamethrin) are approved for use in residential areas by the Environmental Protection Agency (EPA).
A map of the spray blocks can be found here: https://arcg.is/5KSO50.
To avoid mosquito bites, residents are also encouraged to take precautions when spending time outdoors between dusk and dawn such as:
- Wearing long sleeve tight knit shirts and long pants
- Limiting time outdoors between dusk and dawn
- Using a mosquito repellent such as DEET, Picardin, or oil of lemon eucalyptus
- Eliminating standing water on your property
To learn more, please visit the Vector Control website.