Care Fresh rules as a litter and the corner litter boxes are not as good as i thought!
I got a bag of carefresh the other day when the local pet shop was out of the 30 liter bags of litter I normally use. I could only get a 5 liter bacg but thought i would give it a try, well it is great, rabbit smell is down, there is no soggy section in the litter box, in fact 3 days in and the litter tray is dry to touch, both rabbits are still using it! Normally what happens when i let them out at night they dash to the outside litter tray to go pee as they refused to use the inside one as it will be 24 hours old. 3 days in and still using the inside one!
Add to that i cracked one of the corner trays that I have so put a cheap large normal shaped cat one in and they love it! No litter being dug out and even better less mess and they seem to not be hitting the wall!
I was wrong 
Only issue is that carefresh cost me $15 for 5 liters compared to the other litter which is $19 for 30 liters but i do go through a TON of the stuff. i found a website on line that I can get 30 liter delivered of Carefresh for $33 and i think it will end up being more cost effective as I use less on a daily base but still it is going to hurt my wallet!