My bunny uses Critter Country. It's made from compressed plant fibers. I found it uite a bit easier to clean up than Carefresh. It also has better odor control (in my opinion). Other things on the market that are safe to use are Feline Pine, Yesterdays News, Worlds Best Cat Litter (corn based), Clump N' Flush Cat Litter (corn based), Swheat Scoop (wheat based), Cat Country (exactly the same as critter country, just don't use the scented one for rabbits).

I would never recommend using cedar or pine shavings (horrible for absorbing fluids and odor control). I would never use cat litter, not only causing respiratory damage, but, the clay will stick to the hair on their paws and then they'll lick it off as the clean themselves, causing the clay to be ingested. And what does clay do? It's absorbs fluid... Rabbits need tons of water!!<<< This is especially important to you, because you have an angora (i think I heard you right) not only will she ingest it, but, it will cause mats in her fur, so I'd even be cautious with the non-clay based clumpings, but, at least if she ingests it she'll be okay.

Hay is not bad, it just gets messy pretty quick, not to mention it isn't the best for fluid and odor absorbency. A friend of mine with numerous rabbits uses hay for litter, and she goes down to the local race track and haggles a decent price out of one of the hay vendors. The pets stores around her charge an arm and a leg for a bale of hay.