Delaware Begins Annual Mosquito Control Spraying in Woodland Areas

Tuesday, March 17, 2026 at 10:06 AM

Delaware's environmental agency will start its yearly mosquito control program in woodland pool areas beginning Friday, March 20. The initiative targets mosquito larvae to reduce adult mosquito populations during spring months.

Delaware’s Department of Natural Resources and Environmental Control will launch its yearly mosquito management program in woodland pool areas starting as early as Friday, March 20.

The seasonal treatment initiative will continue through mid-April, depending on weather conditions. Officials plan to target mosquito larvae in their aquatic stage to prevent the development of adult biting mosquitoes that typically emerge from these woodland environments during spring months.

By focusing on immature mosquitoes in their larval phase, the program aims to significantly reduce the population of adult mosquitoes that would otherwise emerge from woodland pool habitats later in the season.

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