DEP Launches 2025 Black Fly Spraying Program Across Pennsylvania Waterways

At onset of black fly larva season, Pennsylvania bites back

DEP monitors and treats 48 rivers and streams spanning more than 1,800 miles for black flies, also knows as gnats. The post At onset of black fly larva season, Pennsylvania bites back appeared first on The Allegheny Front.

DEP Launches 2025 Black Fly Spraying Program Across Pennsylvania Waterways

HARRISBURG, Pa. (EYT) — The Pennsylvania Department of Environmental Protection (DEP) has kicked off its 2025 Black Fly Suppression Program, targeting over 1,800 miles of rivers and streams with treatments aimed at curbing the pest population. According to the DEP, the program uses aerial and ground spraying to apply Bacillus thuringiensis israelensis (Bti), a naturally occurring bacterium that kills black fly larvae without harming fish, birds,…

Department of Environmental Protection Begins 2025 Black Fly Suppression Program

From Pennsylvania Department of Environmental Protection Photo courtesy of Michael Glazier on Unsplash The Pennsylvania Department of Environmental Protection (DEP) has begun its annual Black Fly Suppression Program, monitoring and treating 48 rivers and streams spanning more than 1,800 miles. “As the weather turns warmer, Pennsylvanians will be spending more time outdoors, and black flies (biting gnats) are a pest that can put a damper on an ot…