ok i am still new to the chicken world and i know that they are farm animals and flies are bound to happen but i have so many its not even funny and i have gotten to the point where every single day im changing the coop out and scooping the pen i was using sand was just not helping and then it is hay its a mess please someone if you have a home remedy or suggestion on what to do or how t cut down on them please let me know thank you so much