Lee from Herron, Michigan writes
Also, as we are now inundated with the most cluster flies we've ever seen, when would be the best time to spread this to keep next year from being so bad?
NiBor-D Insecticide can potentially harm earthworms that come in contact with it. Late Summer would be the best time to treat for Cluster Flies as they are the worst in the beginning of Fall.
Answer last updated on: 09/18/2015