Helicopter Application to Control Mosquito Larvae Scheduled – Updated

April 18, 2023

The East Middlesex Mosquito Control Project will be conducting a helicopter application of the biological larvicide, Bti (Bacillus thuringiensis var. israelensis), to control mosquito larvae in Bedford. Wetlands currently being evaluated for this application are located near Davis Road/Winterberry Way, Old Stagecoach Road and at Hartwell Town Forest. 

One helicopter application will take place between Thursday, April 20 and Friday, April 28. 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.

Bti is a natural occurring bacterium found in soil, and is classified by the EPA as relatively non-toxic. Bti is target specific and only affects mosquito larvae and a few closely related aquatic insects in the fly family. Bti breaks down quickly in the environment. The product to be used is VectoBac GS (EPA Registration #73049-10).

For further information, contact the East Middlesex Mosquito Control Project at 781-899-5730.

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