Adult Mosquito Spray CalendarAugust 2025SunMonTueWedThuFriSat272829303112Aerial (plane) Spraying for Adult Mosquitoes; Grandview, Prosser, and Richland345Ground Based (Truck) Spraying for Adult Mosquitoes; Benton City, Prosser, and Richland6789Aerial (plane) Spraying for Adult Mosquitoes; Grandview, Prosser, and Richland10111213141516171819202122232425262728293031123456