 The city of Sioux Falls is ramping up its war on mosquitoes. Everything was going just fine up until the recent flooding created plenty of standing water mosquitoes use for nesting. City Environmental Health Manager Dominic Miller says now city crews have to go after 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. That spraying will take place in the evenings when mosquito activity peaks. Miller says workers will also be out during the day.