How long can rats stay out of the cage with no water. I give them their food bowl and litter box but can't give them water ( I tried they dumped it over). I don't want them to get dehydrated. They just run around my bed.
What I do when I have one of my rats in an area for out-time that doesn't provide access back to the cage, I just grab one of their normal water bottles and hold it up for them and see if they want a drink every 15 minutes or so.
They will drink from the bottle just the same if you are holding it or if it is hanging in the cage.
Just put the bottle sitting upright or so the nozzle isn't facing down and it won't leak or anything.