I think it's been three months since I started my litter. I started out stirring it every day, laying down DE every few days and then adding a layer of bedding after the DE. This didn't seem to be working for me. I was getting some build ups of ammonia that bothered me. So I tried stirring it more... that made the problem worse. Then I stopped stirring and just layed down some DE, but in the mornings after the DE they would all come out with white noses even if I layed some bedding on top of it. I didn't like that. I still ended up with some ammonia smells that felt problematic. Then this last week or so I had a lot on my plate and didn't do anything but let them out in the morning feed/water them and then put them away at night. I planned on just cleaning the entire thing out and starting from scratch, but I starting noticing the last few days that there wasn't any smell when I opened it in the morning, and when I put my nose down near the litter there was only faint ammonia smell. Hrmmm.... So until this morning it had been almost 10 days since I had done anything. I laid down about 8 cups of DE and an inch of bedding and don't plan on touching it for another 10 days or so. Am I on the right track? Their house is 8'x12', a lino floor and 17 ducks and 2 geese living in it.