Mosquito Control

DNREC’s Mosquito Control Section provides mosquito control services throughout Delaware to maintain quality of life and protect public health by reducing the possibility of mosquito-borne illnesses.

For help with nuisance mosquitoes where you live, call one of our field offices:

The Northern Delaware Office, 302-836-2555, serving New Castle County and the northern half of Kent County, including Dover.

The Southern Delaware Office, 302-422-1512, serving the southern half of Kent County south of Dover and all of Sussex County.

Find the right office for you either by Zip Code or by map.

Main Office Contact

Dr. William Meredith

Mosquito Spraying

Use the Mosquito Control Section’s Spray Zone Notification System to subscribe for updates about when and where pesticides will be applied to control mosquito populations.

Asian Tiger Mosquitos

Learn about Asian Tiger Mosquitos, Delaware’s toughest nuisance mosquito, and how you can help manage your property to avoid them. 

Mosquito-Borne Diseases

Learn about mosquito-borne diseases of concern in Delaware.

Wetland Management and Restoration

Learn about controlling mosquito populations by improving and managing wetlands.

Controlling Mosquitos in Delaware

The Mosquito Control Section focuses on controlling larval and adult mosquito populations and treating mosquito breeding habitats. It uses the latest Integrated pest management approach, combining source reduction with the judicious use of insecticides.

During the warmer months, Mosquito Control monitors and treats mosquito populations that emerge from wetland areas found throughout the state, including ditches, stormwater ponds, wet woodlands, and coastal salt marshes.

The Mosquito Control Section works year-round on water and marsh management projects designed to reduce mosquito populations.

The Section also provides the public with information on dealing with mosquitoes, from reducing backyard breeding to avoiding mosquito bites.

The Delaware Mosquito Control Section is part of the American Mosquito Control Association. It takes a green approach to mosquito control (from The Observer, Fall, 2001), balancing the need to control mosquito populations and protect human health, with the needs of wildlife populations, fisheries, wetland restoration, natural heritage and biodiversity, and more.

For assistance with nuisance mosquitoes, please contact either the Northern Delaware Office (Glasgow) or the Southern Delaware Office (Milford) at the phone numbers listed in the Contact Us section above. You can determine which is the right office for you either by Zip Code or by map.

More Information

Mosquito Control in State Law (16 Del. C., Chapter 19)

W.H. Meredith and S.C. Eppes, 2017, Climate Change: Vector-Borne Diseases and Their Control — Mosquitoes and Ticks, Delaware Journal of Public Health, Vol. 3(5), DOI: 10.32481/djph.2017.10.009

Why We Need Mosquito Control

Mosquito Control in Delaware

Delaware’s Problematic Mosquito Species

Questions and Answers About Mosquito Control in Delaware

How to Prevent Backyard Mosquitos (Outdoor Delaware, 2021)