The insects swarm in large black clouds - and there's no easy way to get rid of them.
The recent warm, wet weather is attracting the cluster fly to rural areas causing home owners to take urgent action.
Steve Hitchon got an exterminator in who did a roof treatment and an internal and external spray treatment. โIt comes back to keeping them out of your house in the best way possible by blocking any entrance points, and if any do get in vacuum clean them up. โWeโd try the old fly spray and it was getting worse and worse and worse,โ Hitchon said.