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October 5, 2026

Mosquito Control Treatments in Harbor City and Wilmington

The image promotes an area-wide mosquito control treatment program, featuring a mosquito silhouette and bold text.

Please note: If weather conditions are not favorable, the application may be postponed or delayed. 

Application Date(s) 10/5/26, 10/7/26, 10/9/26
Time 12:00 AM - 4:30 AM
Location See map below
Public Health Pesticide DeltaGard
Purpose To reduce the adult mosquito population and lower the potential risk of mosquito-borne disease transmission.

About DeltaGard

  • DeltaGard contains deltamethrin, an insecticide in the pyrethroid family. Pyrethroids are synthetic versions of pyrethrins, which are naturally found in chrysanthemum flowers.
  • During Treatment
    • As a precaution, residents and pets should stay indoors and keep windows closed during the treatment.
    • Cover outdoor beehives, fishponds, pet food, and water dishes.
  • After Treatment
    • DeltaGard degrades quickly in sunlight and, when applied according to the label, poses a low risk to people and animals.
    • As a standard precaution, thoroughly wash all fruits and vegetables before consumption.
  • Learn more about DeltaGard Pesticide Label

Treatment Area

Map Key: Orange = Harbor City treatment area | Blue = Wilmington treatment area