I'm trying to find something that wouldn't cost a fortune if she it used all summer.
There are packets that you can add to water for other animals but I am looking specifically for rabbits..Peter's has something but I'm trying to find out whether it's worth anything
How about the unflavored (clear) Pedialyte, I don't think it has any sugar in it. When Nick needed oral fluids, I used the Walmart brand, it was a *lot* cheaper than the actual Pedialyte.
I bet if there were some packet type things that would be even cheaper, though, for long term use.
For now I would just place another water bottle in the hutch or cage to make sure that your bun has water all the time and that it is never empty. There is a product by peter's for water but I have no idea whrther it is useful or not.. I'll place the link , maybe someone else has used it and can comment.