I have a 10x20 chicken run with 13 pullets and the smell seems to have gotten really bad lately. I am in north Florida and we have temps in the upper 90's if that make a difference. The floor consists of fresh dirt covered with straw. I have changed the straw and if seems within days if has the funk smell again. Should I just leave it dirt? I am thinking that the straw may be holding the smell? Thanks in advance for any help or suggestions!!