I have a question. I need to know how to keep the smell down from my small to medium flock? I have 17 chickens rite now in my backyard. I have them in a area of about 50'/65' square. I am going to be re homing 5 roosters asap. The smell is getting a little more in the summer heat! I have been letting them out into the other side of the yard during the evening were there is grass, they have demoed the side they are on that had grass as expected, I have been cleaning the yard often and disposing of the pine chips and droppings as often as twice a week. Is there anything else I can do that will cut down on the smell?