For my cages i use all Carefresh cause even when you think their 100% trained they still Leave you some coco pebbles
everywhere.I used to use I dont even reemmber the name of the litter but mine wouldnt go into it.So now i use Carefresh for the bedding and just ripped up newspaper for the litter box.Yea Rabbit.org is probably the greatest site for bunnies
Go to it.