I have been reading about this on the web and just started today to turning my little furry girlfriend Xani (pronounced Zani) into a green cat.
Litter: Picked up some sawdust from a local mill for free.
Composting: I am setting out to build Xani her own composter from some instructions I found online using sawdust and leaves in a wood box. Several sources said the waste needs to compost for 18 months before it can be used. I am planning to use it on non edible plants.
If there is anyone out there who has been down this road a ways and can share some tips, we would be grateful.