smart: She has a cage but is allowed to run for a couple of hours a day. We want to train her for both her cage and the house. I used to have a french mini lop and she was trained but I used clay cat litter but I read that it is not recommended in case they eat it. Would World's Best Cat Litter or Feline Pine work? Any suggestions appreciated.We want to litter box train our 8 week old mini rex. What is the best litter for her?It is important to fill your rabbits litter box with an absorbent, non-toxic litter. Most bunnies will try and chew their litter or will ingest some during grooming. It is advisable to try lots of different litters to see what your rabbit likes best. As most rabbits enjoy rolling and digging in their litter boxes use a soft litter if you bunny is prone to sore hocks or spends a lot of time in the tray. Other things to consider are if your rabbit chews the litter, in this case you are better to use an organic litter, but change frequently to avoid mould.We want to litter box train our 8 week old mini rex. What is the best litter for her?I use a generic clumping litter for mine. It is the one that looks like crushed pebbles or sand. The compressed paper varieties are far to tempting to eat and the crystals just look dangerous. I have never had a problem with clumping, and the bunnies love digging it as well.