Frost_Law_Map_2022 Posted on March 24, 2022 Frost_Law_Map_2022 Williams County Frost Law map effective 3/28/2022. Recent news Aerial Adulticide – Trenton – 6/9/2023 Posted on June 9, 2023 Aerial Adulticide – Williston – 6/8/2023 Posted on June 8, 2023 Ground Adulticide – Williston – 6/6/2023 Posted on June 6, 2023 Adulticide – Williston – 6/2/2023 Posted on June 2, 2023 Adulticide – Ray and Trenton – 6/3/2023 Posted on June 1, 2023 All news »