Greg from San Antonio Tx writes
Will Bifen work on horseflies and blackflies? Do you apply the same way?
Bifen IT is labeled for flies and can be applied at 1 oz. per gallon of water per 1,000 sq. ft. as directed. However, because flies in general can be more challenging to control with spraying alone, we suggest you refer to our helpful Fly Treatment & Control Guide for treatment recommendations and for links to related products.
Answer last updated on: 06/26/2023
