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dipping for larvae
Municipal Larviciding

Once a municipality has determined they have a need for mosquito control, the work can the winter. 

A Special Permit issued by the State of NH must be secured prior to conducting a control program.  Dragon submits Special Permit applications in the winter to guarantee issuance by early spring.  Applications describe in detail the mosquito management plan for the town and are accompanied by supporting surveillance data and GIS maps.   


Yearly, these applications are scrutinized by various NH State Agencies and a permit is issued.  All control measures must be conducted in accordance with the Special Permit.     

Mosquito control begins with a comprehensive look at a town’s geographical area from the sky.  We identify potential mosquito habitats using satellite photos, maps, tips from residents and other sources. 

The next step is visiting sites on foot and sampling mosquito larvae.  A thorough assessment is conducted for potential mosquito habitats, during which wetlands are mapped and site data is collected.  Contrary to popular belief, not all wetlands support mosquito larvae.  Larval surveillance is done throughout the mosquito season.


Larviciding is only conducted after larval surveillance data has confirmed a need and action thresholds have been met.  This method of prescriptive larviciding is highly effective, killing immature mosquitoes before they get a chance to mature into winged adults and pose a biting risk. 

Following larvicide treatments, mortality assessments are performed to ensure that our approach is producing the desired results.

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Surveillance Program


As the mosquito season progresses, adult mosquito surveillance begins.  Surveillance is an early detection system to confirm the presence of diseases such as Eastern Equine Encephalitis (EEE), West Nile Virus (WNV) and Jamestown Canyon Virus (JCV) as well as an indicator of mosquito population trends. 

We deploy various types of mosquito traps depending on the targeted species.  Captured mosquitoes are then frozen, identified, pooled by date & location, packed in dry ice and sent to the State Laboratory for testing.  (A mosquito pool is a grouping of trapped mosquitoes by collection date, location, and species - not a specific pool of water.)

Positive EEE/WNV/JCV test results will trigger a reassessment of risk levels and immediate discussions with town officials.  At this point, spraying adult mosquitoes may begin in accordance with the scope and scale outlined in town contracts.  Some towns request emergency spraying only in limited areas (such as the edges of school athletic fields) while others select broad-scale treatment. All control measures are guided by adult mosquito surveillance data and disease test results. 

Residential Services


Dragon Mosquito Control currently serves hundreds of home owners and businesses in New Hampshire's Seacoast area. 

Carefully targeted and well timed spray treatments in advance of weddings, parties or other outdoor gatherings can dramatically reduce the nuisance of mosquitoes during an event. 

We stand by the quality of our work and as a result, we may occasionally decline jobs in which we feel a measure of acceptable mosquito control is not possible.


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