15 Tips to Reduce FLIES Around the Chicken Coop1. Remove the Poop : Promptly remove nightly droppings from the chicken coop. is the best solution to eliminating this stinky fly attractant and it takes less than a minute daily to keep the coop poop-free! 2. Sand for the Driest Coop Possible: Use sand as chicken coop litter and ground-cover in the run.