It will be interesting to see how the "smell" shakes out this spring when it all thaws and we start to get rain. Last year the chickens and one goose were all together in the same run and coop and it stunk so bad when it started to warm up. That's when I switched to FF, haven't had any stink since. And, if the deep litter starts to get a little stale I just sprinkle a couple handfuls of BOSS and in a few hours it's a tilled up and ready for a new layer of shavings. ( I think I got that idea from this thread too, so thanks !)