July 31, 2019 

A hand application for black fly suppression will be conducted on Yellow Breeches Creek today, July 31 in York and Cumberland Counties.  The application will be conducted by DEP biologists using a back pack sprayer in stream and from bridges.

The product being dispersed is Vectobac 12AS, which is a Bti product manufactured by Valent Biosciences.  

 July 30 & 31, 2019

    An aerial black fly suppression operation has been scheduled for Tuesday July 30 and Wednesday July 31 on the North Branch Susquehanna River, the main stem of the Susquehanna River, the Juniata River, Fishing Creek, Sherman Creek, Conodoguinet Creek and Swatara CreekThis operation will begin in Wilkes Barre in the morning prior to spraying the main stem and work south ending near Bainbridge. This operation will include flights in Cumberland, Dauphin, Juniata, Mifflin, Lancaster, Perry, Northumberland, Snyder and York Counties. The helicopter will be a Bell 205 with the tail number N638HA and is painted red with yellow striping.

 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