I give crumble that has been moistened with water everyday and have for 2 years with no issues. It started first to keep them from wasting the crumble and fines too and I just kept doing it. I do have feeders with dry pellets for through the day and use this as a morning treat. Just make sure you are only doing small enough amount that the eat it up quickly and you don't have moisten feed sitting around in the heat that can go bad through the day.