The Maryland Department of Agriculture, Mosquito Spraying Notification

The Maryland Department of Agriculture (MDA), Mosquito Control Section, is in the process of planning
mosquito control activities for this summer. The Department provides funds to support this work with
appropriations provided by the Maryland Legislature. It is important that your municipality/community
begin planning at an early date if you wish to participate in the adult mosquito control program this year.
As in the past, participation by your municipality/community must be sponsored through PG County

To better serve the residents of Prince George’s County, the State and Prince George’s County will jointly
fund the cost of the larvicide program. Your municipality/community will automatically be included in
the larvicide program at no cost to you. However, if you would like to participate in the adult mosquito
spray program, Edmonston will be responsible for 100% of the costs related to their participation.
Adulticiding (spraying) will begin May 26, 2024, and continue through September 30, 2024. Spraying for
adult mosquitoes will be based on results from standardized surveillance methods and complaints
received. Our surveillance threshold is 3 female mosquitoes in 2 minutes in a landing rate count, or 24
female mosquitoes in a baited light trap. This may influence the amount of spraying that is conducted.
However, due to variable weather conditions and other factors, we cannot guarantee that surveillance or
spraying will be conducted during any given week, even if we receive community complaints. Complaints
should be forwarded to our office on a regular basis. Please provide the following information for each
complaint: name, address, phone number, email address, and any stagnant water in the vicinity. In
addition to forwarding complaints about adult mosquito activity, you should report areas suspected of or
known to breed mosquitoes on public property. Complaints may be faxed to (301) 422-0502 or emailed to

Our preferred method of submitting a complaint is by way of our online complaint system, which can be
found at:
Please note, the online complaint system only accepts complaints during the season (May-September). If
you attempt to access the complaint portal at other times, you will get an error message.
There has been a surge in the urban mosquito population due to the introduction of the Asian Tiger
mosquito (ATM). The ATM displays a strong preference for breeding in small, manmade containers such
as flowerpots, trash cans, discarded tires, buckets, etc. The ATM does not breed in wetlands or waterways.
With its breeding habits and a very short flight range of less than a quarter mile, the source of an ATM
problem can typically be found in one’s backyard. Its association with human habitation and persistent
daytime biting make the ATM a particularly troubling mosquito in urban and suburban settings. Program
staff can assist residents by identifying actual ATM breeding containers, but it is the resident’s
responsibility to use this information to locate and eliminate additional breeding sites on their property.

Individuals, communities, and businesses are strongly urged to take a proactive stance in the fight against
the Asian Tiger mosquito.

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