Ground Adulticide Treatment | Trenton & Williston | WCVCD | 9/24/2025

Posted on September 24, 2025


NOTICE ground mosquito treatment

9/24/2025: The Williams County Vector Control District (WCVCD) will conduct ground adulticide treatments in Trenton and Williston Spray Block 7 (Spring Lake Park area), tonight, Wednesday, September 24, near sunset, weather and conditions permitting. WCVCD will be using DeltaGard (active ingredient: Deltamethrin), which is approved for use in residential areas. Residents are reminded to maintain a distance of at least 300 feet from Vector Control trucks during fogging operations.

View the Spray Block map here: https://arcg.is/0TzuHq

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.

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