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Products Used

The EPA Regulates Mosquito Control Insecticides

This image is the logo of the United States Environmental Protection Agency (EPA), featuring a stylized flower and water.

The Environmental Protection Agency (EPA) has regulated mosquito control through enforcement of standards instituted by the Federal Insecticide, Fungicide, and Rodenticide Act. This legislation mandates  extensive testing and documentation for public health insecticides, prior to their registration and use. These requirements are among the most stringent in the federal government and are met through research by established scientists in federal, state and private institutions. This process ensures that the public health insecticides available for mosquito control do not present health or environmental risks when used as directed. 

Adulticides

Adultcides are sprayed from SWMD truck mounted Ultra Low Volume sprayers along the streets of the District. SWMD sprays in the evening starting just before dusk and into the evening. Occasionally, SWMD will spray in the morning from  three to four hours before dawn until just after dawn.

Larvicides

Larvicides are used to treat standing water and have a lasting persistance between 6 and 40 days depending on the product and conditions.

Depending on the product and conditions, the above larvicides are used to treat standing water and have a lasting persistance between 6 and 40 days.

Storm Drains

These products are utilized to treat roadside ditches and other non-permanent bodies of water that tend to be only flooded during certain times of the year. It is mixed at a rate of one pound to 100 gallons of water. The mixing tank is mounted on the back of four wheel drive trucks that are equipped with pumps, 100 feet of hose and a handheld spray gun. It is applied by the passenger while the truck is on motion to cover large areas of the county quickly. If the conditions are right, the Vectobac-WDG formulation remains active for up to 6 days while Vectolex WDG can remain active up to 40 days. This product kills only mosquitoes, midges and black flies.