E from Danville, Vt writes
We recommend that you read our article How to Get rid of Cluster flies. This article will explain how to stop them from coming in and what to do if the cluster flies have already gained entry. Cyper WP would be a good choice for outdoor control around the perimeter of your home. Be sure to spray around door frames, window frames, around the bottom of the foundation and anywhere else the flies can gain entry.
Answer last updated on: 09/26/2011