i have 10 x 12 coop, dirt floor, put out 2 bags in December, and two more bags out in June. My hens free range throughout the day and only roost at night in the coop. I move the existing shavings around once or twice a month. Oh and I used DE for the initial first two bags. and then in June put a little more DE. My coop is dry and it has not smelled at all. But like I said my hens free range and only roost in the coop. My problem is the dust from the DE. When I turn the shavings it is so dusty. I have to assume it is DE and not other dust.