About to get rid of my hens if I cant solve this FLY problem

[Extra Java]

We use "Fly Predators" but they only take care of our own flies and not transient flies from the nearby neighbors. For those, we hang the stinky smelly bags along the perimeter.
If you order Fly Predators, be careful not to place them where the chickens scratch or they will eat the pupae.

If you follow your chickens, they usually scratch where the fly larvae are hatching. Maggots need moist rotting material to mature into flies.
Check to see if you have any rotting hay or moist leaves around.

The Muscovy duck has been know to be a good fly control as there are stories of them eating 25 flies per hour and one butchered was found to have 100's of flies in it's belly.

 

[Nathan Sampson]

Instead of the stinky bags Tractor Supply sells reusable fly traps that I use with great success.

 

[Jenny1]

Well, I gave in and sprayed tengard everywhere. That finally worked. I was desperate. Thanks everyone! (dont judge me. Im just not an organic person! I wanted those dumb flies dead.)