Adulticide – Williston, Epping, Springbrook & Grenora – 7/29 – 7/31/2021

Posted on July 27, 2021


Notice of ground and aerial adulticide campaign with image showing a mosquito crossed out

UPDATE 7/30/2021 @ 11 am: Williston Vector Control will conduct a ground adulticide treatment in Grenora on Friday, July 30th near sunset. Please keep a distance of at least 300 feet behind Vector Control trucks while spraying.

UPDATE 7/29/2021 @ 3:15 pm: Williston Vector Control will proceed this evening near sunset with the aerial adulticide treatment for Williston Spray Blocks 2, 3, 4, 5, 7, 8, weather permitting.

The Williston Vector Control District is tentatively scheduled to conduct adulticide treatments as follows:
  • Ground adulticide treatments for Epping, Springbrook, and Grenora on Tuesday, July 27th. Please keep a distance of at least 300 feet behind Vector Control trucks while spraying.
  • Aerial adulticide treatments for Williston spray blocks 2, 3, 4, 5, 7, 8, and 10 between Thursday, July 29th and Sunday, July 31st.

All treatments will take place near sunset, weather and conditions permitting. Specific treatment dates and locations will be updated on this post and on the Williams County Facebook page by about 4 pm on the potential treatment day.

For more information and a map of the WVCD Spray Blocks, visit the Spray Reports webpage.

Williston Vector Control uses Zenivex E20 for adult mosquito control treatments (adulticides), which contains the active ingredient Etofenprox. Zenivex E20 is a product approved for use in residential areas by the Environmental Protection Agency (EPA).
To avoid mosquito bites, citizens are advised to take extra precautions when spending time outdoors during the hours of dusk to dawn during the summer months. Wearing long sleeve tight knit shirts and long pants, limiting time outdoors during these times, and using a mosquito repellent such as DEET, Picardin, or oil of lemon eucalyptus are good actions to take to prevent bites. Citizens can help prevent mosquito re-population by eliminating standing water on their property.
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