[cypher]

I haven’t heard of Meta Zorba is that a kind of litter? Most things like that don’t tend to be safe for hams if it is litter rather than a substrate? The best thing to use for that is sand, the same as you use in the sand bath, chinchilla sand (not dust) or you can use children’s play sand which needs to be dried in the oven before use.
The best substrate I’ve found after trying many is kaytee clean & cosy, I get mine from Amazon but I’m sure it’s available elsewhere too, it’s a soft paper based substrate similar to fitch but I find it a bit softer, it’s virtually dust free & works well for burrows too. Much better than carefresh.
I haven’t used aubiose but that’s fine too, I think it’s similar to the hemp which I have used & that worked well too a bit dustier than paper substrate though.