Megazorb is similar to carefresh, it's a wood based horse bedding which is very absorbant, it's also a lot cheaper than carefresh at £7 for 85l (plus postage if you have to get online, but from a equine shop, it's around £7) the main issue is the size bag it comes in
But I really love it and would never switch back to shavings (too stinky)