Category: Vector Control Treatment

Adulticide Treatments | Williams County | WCVCD | 6/17 – 6/18/2025

The Williams County Vector Control District (WCVCD) will be conducting ground and aerial adulticide treatments in Ray, Trenton, and Williston on Tuesday, June 17 and Wednesday, June 18, weather and conditions permitting. On June 17, WCVCD will be conducting ground adulticide treatments in Ray and Trenton. Weather permitting, treatments will occur near sunset. Please maintain a … Continued

Multiple Adulticide Missions | Williams County | WCVCD | 6/10/25-6/17/25

The Williams County Vector Control District plans to conduct three separate adulticide treatments between 6/10/25-6/17/25 across the County. Citywide aerial adulticide missions in Williston and Grenora area using Imperium will begin as early as the afternoon of 6/11/25. Ground adulticide mission in Trenton/ Trenton Park area using DeltaGard will begin as early as the night … Continued

Ground Adulticide | Williston | WCVCD | 6/6/25-6/9/25

The Williams County Vector Control District will be conducting truck mounted adulticide treatments between 6/6/25-6/9/25 in Williston (Spray Block 8). Weather and conditions permitting, treatments will occur near sunset. Find this information and a map of the WVCD Spray Blocks at https://www.williamsnd.com/spray-reports/. Please maintain a distance of at least 300 feet behind Vector Control trucks … Continued

Ground Adulticide | WCVCD | 5/25/25–5/31/25

VECTOR GROUND ADULTICIDE SPRAYING NOTICE (5/30/25 Update) Spray Blocks 7 and 8 will be serviced with DeltaGard tonight if conditions allow. _____ WCVCD will be conducting a targeted ground adulticide mosquito spray missions this week, beginning Tuesday night, May 27, weather permitting. (5/27/25) Williston Spray Block 14 is the current target area View the Spray … Continued

Ground Adulticide Treatment | Williston | WCVCD | 5/13/2025

5/13/2025: Williams County Vector Control District (WCVCD) will be conducting a targeted ground adulticide mosquito spray mission tonight, Tuesday, May 13, in Williston’s Spray Block 8, weather permitting. Link to Spray Block Map The department will move forward with spraying tonight if wind speeds remain between 12–15 MPH. For safety and effectiveness, it will be … Continued

Ground Adulticide Treatment | Williston | WCVCD | 8/22/2024

8/22/2024: Williams County Vector Control District (WCVCD) will be conducting an ground adulticide tonight, August 22, 2024, in City of Williston Spray Blocks 3 and 8. Weather and conditions permitting, the treatment will begin after sunset. Residents are reminded to please stay at least 300 feet away from a Vector Control truck while it is … Continued

Ground Adulticide Treatment | Ray & Williston | WCVCD | 8/1/2024

8/1/2024: Williams County Vector Control District (WCVCD) will be conducting ground adulticide treatments tonight, August 1, 2024, in Williston Spray Block 7 and in Ray. Weather and conditions permitting, the treatment will begin after sunset. Residents are reminded to please stay at least 300 feet away from a Vector Control truck while it is fogging. … Continued

Ground Adulticide Treatment | Williston | WCVCD | 7/31/2024

7/31/2024: Due to the detection of West Nile Virus in an isolated pool of mosquitoes, Williams County Vector Control District (WCVCD) will be conducting an ground adulticide tonight, July 31, 2024, in Spray Blocks 2, 3, and 4 in the southeastern area of the City of Williston. Weather and conditions permitting, the treatment will begin … Continued

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