Fly control should be initiated in late spring or late fall. Weather that is hot and dry or cold and wet produces fewer flies. Warm, wet weather means more flies. Cool, wet weather will delay fly ...

A new insecticide is touted as controlling horn, stable, deer, and horse flies at a fairly high rate for up to two or more weeks with one application, based on efficacy control information.

Horse flies have a maximum range similar to most flies – five to 10 miles – though most fly populations remain relatively close to the breeding ground where they emerged, she said. How to ...