I had trouble finding it too, everywhere had the clumping kind or non-clumping with fragrance in it thanks for the tips on not Abusing the litter after it's wet. As far as other media I have a hunch that other stuff would work. I have API aquatic plant media that i was tempted to try. that would hold up underwater and provide a substrate for the bacteria grow on but I'm going to do his recommendation. I base that thought about API media would work on the professor's comments to a viewer of one one of his videos asking if he could do something similar to the plant media. professor said you can if you want or just save money and use litter.