My 4 babies made the move to the big girl catawba coop 3 days ago and OMG i can't even open my back door the flies are so bad! i'm using food grade DE on and in everything and i can't even believe how bad they are! there is no smell, just flies EVERYWHERE! I move the coop every day and sprinkle DE on the ground before and after moving it. what else can i do? anyone?