After searching the Internet for how to train chickens to eat flies all I came up with was training chickens to fly or raising soldier flies for maggots. I have no interest in encouraging my chickens to fly out of my yard nor do I relish the idea of creating maggots on purpose. I put the stinky traps in the corner of their run on the outside and then added sticky traps above those. The chickens showed no interest at all in the flies stuck to the sticky traps. Today I pressed mealworms into the sticky traps and will continue to do so until the chickens become accustomed to eating the flies. If anyone else has done this or has any suggestions please send them my way.