There are better options than the commercial dreck that clogs landfills.
But first of all, your cat overlords have to like it. You will know their displeasure instantly.
In years past, I collected pails of dry garden soil and dry sawdust to keep my cats happy over winter. Sawdust was added as the absorbent material, with sprinklings of garden soil as the
compost accelerator. When the litter box was full, it went out on the shelterbelt
trees (out of reach of my dogs).
It basically did not smell. The cats preferred it to the bought stuff.