If the virus is detected, then controlling the mosquito population becomes necessary to prevent the transmission of the infection to humans. Mosquito control is conducted on a local basis through the local health departments, other agencies and contractors. Such programs emphasize elimination of larva and breeding areas. A natural larvacide, an insecticide that kills larva, not adult mosquitoes is used. In addition to mosquito fogging programs, residents can assist in controlling these pests by eliminating unnecessary standing water and exercising good water management in irrigation practices to ensure water runs off and doesn't collect.
Mosquitoes are night-time feeders.
Peak activity occurs during sundown.