Mosquito Control


The Mosquito Control Section provides a direct service to approximately 2,100 communities in 16 Maryland counties. The primary goal of this program is to prevent the occurrence of mosquito-borne disease in humans, pets and livestock. Mosquito control is an economic necessity in some parts of Maryland dependent on outdoor tourism during the summer. The program relies on surveys and monitoring of the larval and adult mosquito populations to coordinate control activities. Control techniques include breeding source reduction, public education, biological control and insecticide applications from aircraft or ground equipment.

To find out more, call Mosquito Control at 410-841-5870

Unscheduled Spray Activities

MDA works with many communities across the state to provide routine mosquito spraying services; however, when West Nile Virus activity is detected in an area we do not regularly serve, MDA will spray the area and announce those activities on this web page. 

The product used in our ground ULV spray program is Biomist 30+30.  

​Any existing spray exemptions in these areas will be temporarily suspended. People should avoid outdoor activities on spray nights. For more information, call MDA’s Mosquito Control Program at 410-841-5870.

There are no unscheduled spraying activities at this time.