I was thinking about this thread earlier and I know we all try to keep everything as clean as we can as good animal husbandry practice. BUT before my hose end broke and I was filling directly in the run they would have their clean cold water in the waterer but more often than not they'd be drinking from the woody/muddy floor with either the water I'd dumped out or just the overflow! In the forests from whence they came they wouldn't have had cold water in clean plastic but have drunk from the forest floor so maybe why this seems more appealing to them! I'm not condoning leaving yucky green water out or anythign like that but we should keep things in perspective as well and don't beat yourself up if you dont' change your water every single day!