Submitted by the Board of Health
UPDATE, April 26, 2019: The Board of Health has just been informed that due to poor weather conditions most of this week, the East Middlesex Mosquito Control Project was unable to the helicopter application. The application will take place next week, the week of April 29.
The helicopter application of the biological larvicide, Bti, to control mosquito larvae will take place over large wetlands located in Bedford near Davis Rd. and South Rd at Town Forest.
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 Bti product name is VectoBac G (EPA Registration #73049-10).
For further information contact the East Middlesex Mosquito Control Project at 781-899-5730.
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