AERIAL APPLICATION TO CONTROL MOSQUITO LARVAE
The
East Middlesex Mosquito Control Project will be conducting a helicopter
application of the biological larvicide, Bti, to control mosquito
larvae over large wetland areas of Medford. Wetlands currently being
evaluated for this application are located in the areas of Wrights Pond,
Silver Mine Hill, Bellevue Pond tributary and north of Medford High
School. The application will take place between April 19 and April 30.
The Bti will be applied in a granular formulation by a helicopter flying
low directly over the wetlands. Residents do not need to take any
special precautions for this application.
The material to be applied Bti (Bacillus thuringiensis var. israelensis)
is a natural bacterium found in soil. The EPA classifies Bti as a
relatively non-toxic pesticide. Bti is considered a target selective
and environmentally compatible pesticide that affects mosquito larvae
and a few closely related aquatic insects in the fly family. Once
applied Bti stays suspended in water for 24 to 48 hours and then
biodegrades as it settles to the bottom. The product name of the Bti is
VectoBac GS (EPA Reg. #73049-10).
For further information contact the East Middlesex Mosquito Control Project at 781-899-5730.
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