Routes are drawn to mitigate mosquito populations that have reached the viral threshold set by the state. There are specific mosquitoes that are more likely to carry West Nile, so out treatments are geared more towards lessening their presence in an area to reduce the likelihood of spreading the virus where we have already found positives.

Spraying is scheduled evenings, dusk- to 11 pm- when adult mosquitoes are most active, and pollinators are less active.

The control program uses an Ultra-Low Volume (ULV) spray which disperses fine droplets into the air. Adult mosquito control is the last step of our Integrated Pest Management (IPM) Plan.

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