I've only been organic for about a year so I'm not an expert by any stretch of the imagination, but this is what HEB told me about the Hill Country Fare "Traditional" kitty litter. It is all natural zeolite mined in Tilden, Tx. by Zeotech. It is calcium based with clinoptilolite. By the way, Zeotech is the company that makes Turf Mate which is the product Howard recommends as a soil ammendment. I was having a bad day at work when HEB called me, so I didn't ask them how much clinoptilolite was in the product.
From my own checking/testing (my wife has cats) the "Traditional" brand does not clump while the "Scoopable" brand does. The "Scoopable" brand, also a Hill Country Fare product, is labled as an all natural clay product.
I've also heard Howard, or Tropical John, or one of his listners, say that Sweet PDZ ( used in horse stalls) is also a good substitute. I haven't checked but I understand it has a high volume of clinoptilolite.
My grass yellows after an initial green up. Greensand doesn't green it up either. I haven't done a soil test but my area is traditionaly high alcaline. Like Within Reason, I was hoping that the zeolite would make the iron more available to the grass.
Look forward to and enjoy hearing your advice.
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