Aedes and Culex mosquitoes have differences that can have an impact on treatment programs. The Aedes genus carries Zika, whereas Culex carries West Nile Virus. You should know:
- Which species is in your area. State and county extension offices can help.
- When they are active. Culex usually bite in the early evening and night, while Aedes are active in the early morning and afternoon. Apply treatment during active times.
- Where they breed. Culex needs a permanent water source. Aedes will lay eggs in dry areas that are likely to get wet, such as containers or cracks in the soil.
- How far they fly. Culex stay within a mile or two of a breeding source. Aedes mosquitoes that transmit human diseases typically fly less than a quarter-mile away from their primary source.