Fly infestations threaten farming and livestock operations, contributing to animal irritation and the spread of serious diseases. In this study, the application of Bacillus velezensis PHP1601 (Bacillales: Bacillaceae) treatments (10 5 and 10 10 endospore g −1 ) to pig manure slurries was evaluated as a means of controlling fly reproductive cycles. Two cycles of fly emergence were evaluated over a 33 days period for each replic...