July 10, 2020 

An aerial black fly suppression operation is scheduled for Friday, July 10th on the North Branch Susquehanna and main stem of the Susquehanna River. The spray will start in the Towanda area and include flights in Bradford, Wyoming, Lackawanna, Luzerne, Columbia, Snyder, Northumberland, Juniata, Perry, Dauphin, Cumberland and York Counties.  The helicopter will be a Bell 20with the tail number N638HA and is painted red and yellow.

About the product   Helicopter Applicators Inc. will be dispersing Vectobac SC, which is a Bti product manufactured by Valent Biosciences.  Bti is short for Bacillus thuringiensis var. israelensis, which is a bacterial larvicide, not a chemical, and is the only product used in Pennsylvania's waterways for black fly suppression.  Vectobac SC is a thick brown liquid resembling chocolate milk.  The helicopter will fly low near tree top level and release the Vectobac SC at various predetermined positions on each stream.  Following is a link to the Vectobac label and an SDS sheet.

Vectobac SC Label    VectobacSC SDS