DEP monitors and treats 48 rivers and streams spanning more than 1,800 miles for black flies, also knows as gnats.

Discover effective ways to keep biting flies away with our comprehensive guide. Learn about preventive measures, natural and ...

The Maryland Department of Agriculture is ramping up its black fly control program, especially in Washington County.

Horse and deer flies have scissor-like mouths that will painfully cut and tear your flesh. Black ... bite that feels warm to the touch and spreads. 9. Spider Bites Spider bites vary but look ...