I agree with this - deep litter done properly is the best way to not have the coop smell. (I've had folks come through and actually say, in a shocked voice, "it doesn't smell!".) If it does, then you need more dry stuff. You can turn it daily or you can throw sunflower seeds into the litter and have the chickens turn it for you.I use dried grass clippings / leaves about 6-8" deep. I just turn over the litter daily - no smell and don't need to change it for 6 months or so.