SC Weed and Pest to begin fog applications of Bti

Later this week, Sheridan County Weed and Pest will begin aerial fogging applications of Vectobac 12AS, a naturally occurring soil bacteria known as Bacillus thuringiensis, israelensis, (Bti). This product is ingested by the mosquito larvae, causing disruption in their digestive system, preventing them from becoming adult mosquitoes.

While appearing on Sheridan Media’s Public Pulse, Sheridan County Weed and Pest Assistant Supervisor Brian Songer said the application is done one of two ways. The application of harder larvicide is done primarily by hand, placing bricks, rings or pellets into stagnant water. But for the waters in larger and hard to reach areas, a fixed wing airplane is used to distribute a fog larvicide.

B. Songer 

Just as Songer predicted in May, Sheridan County Weed and Pest has scheduled the aerial application of mosquito larvicide for June 5 and 6, due to the number of larva being found in each sample. The aerial application  is weather dependent according to a recent release from Songer. 

The product does not affect fish, other aquatic invertebrates, or pollinators. 

Any questions should be referred to Brian Songer, Assistant Supervisor, Sheridan County Weed and Pest District, 307-672-3740.