For an ammonia smell, ventilation, ie, fresh air is key. Second, that smell is most obvious because of moisture being present. When the pens are dry, there's rarely that odor. We only fight that issue in late, late winter, early spring. The rest of the time, our air is dry enough here to never have an issue with wet poop out-gassing ammonia.
You could clean, of course, but short of that, applying some calcium carbonate will help dry it out. DE will too, but pricey for that purpose in a large stall. I prefer the calcium carbonate. If the hens pick at it or ingest, so much the better. I am careful about using the preferred calcitic lime, to avoid the high magnesium content. Keep the magnesium percentage below 20%. Some garden lime has magnesium as high as 32%, which is too much.
You could clean, of course, but short of that, applying some calcium carbonate will help dry it out. DE will too, but pricey for that purpose in a large stall. I prefer the calcium carbonate. If the hens pick at it or ingest, so much the better. I am careful about using the preferred calcitic lime, to avoid the high magnesium content. Keep the magnesium percentage below 20%. Some garden lime has magnesium as high as 32%, which is too much.