 The city of Sioux Falls is ramping up its war on mosquitoes. That war was going well until all of the recent flooding created plenty of standing water that mosquitoes use for nesting. City Environmental Health Manager Dominic Miller says now city crews have to go after the adult mosquitoes. If we can kill them before they become adults, that's by far better. But they will be out spraying with weather permitting at least three times this week.