personally I use the oyster straw logs from BAS. I have a store not to far from me that carries it in stock (sorry, not sorry). you can get barley straw as well. Rice hulls, leaves. any number of things you could use. just dont put anything that had roundup or weedkiller applied to it.
I wouldnt rule out the Bunny hay, if you can research what is in it enough it all might be beneficial?
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