I know some of you have used cat litter as a source for your bentonite for making green sand.
Have you had luck with any specific brand?
Conversely, which brands would be best to stay away from?
I just picked up a bag of Kroger Value unscented cat litter. It's a store brand generic and is the cheapest one on the shelves. It says "natural clay" but isn't specific as to which type. I couldn't find an msds for more info on it.
I ground a little of it up and mixed it with some playsand and water and sealed it in a plastic bag to let it condition itself. I'll see if it's any good in a few days.