It’s great that you so actively tried different litters to find the best one. Although it would not work as well with sand litter (too small), have you ever tried a litter screen for more pelleted/granule litters? The urine will fall through the screen and soak in the litter, but there’s minimal contact with the rabbit’s behind, with exception of the initial pee itself because it sits on the screen temporarily as it drains through the holes.
http://www.instagram.com/p/BXsXo28FTcG/?taken-by=wick_theboogeyman
http://www.instagram.com/p/BaPzvpkFcN-/?taken-by=wick_theboogeyman
I can’t comment on sand ingestion because I have no experience, but I know that some owners make dig boxes out of sand, so I reckon minor consumption is not bad as long as she’s drinking water to pass it all through. I can’t imagine sand would cause dental issues unless a tooth was already fractured/split and sand entered it and irritated/infected it. I also cannot comment on the safety of re-using it (bleach and water) unfortunately. Though I personally am a fan of re-using litter if possible and sanitary. There’s a lot of trash disposal with rabbit ownership, so whatever can be done to minimize it, I’m game.
Is everything food-related in the litter box pushed to one side? I do this with Wick so he doesn’t poop/pee on his hay and in his pellet dish when I put it in there.
The answers provided in this discussion are for general guideline purposes only. The information is not intended to diagnose or treat your pet. Seek the advice of your veterinarian or a qualified behaviorist.