Kind of funny that I have actually had the same problem. I collect succulent plants and when you get to a certain point you need to start making your own soil m

Kind of funny that I have actually had the same problem. I collect succulent plants and when you get to a certain point you need to start making your own soil mix. One of the best ways for that is to use soil and hot-fired clay / diatomaceous earth. Which is not really easy to find as a product. Funny enough cat litter can be just that. However, there are many cat litters out there which are made from a wide variety of things. So it's really difficult to eek out the right stuff. Like the article says it can be organic material, or it can be clay that turns to mush when it gets wet. There are other materials out there though, like Turface, which is always high fired clay, or oil-dry materials from auto supply stores, which varies a lot like the cat litter. Either way it kind of seems insane that they are acquiring this material instead of finding a direct and reliable source for the exact material they want.