atkasuki? I don't know what that is.
I agree with you on the Decomposed granite (DG) products, like kittly litter, which can get sludgy over time, but why do you suggest against Oil Dry
Not sure which oil dry products you are talking about, but the company Oil-Dri is the Manufacturer of Terra-Green, which they are touting as a bonsai product.
http://www.oildri.com/agri/index.html
Terra-Green is calcinated clay like Terra-green. Turface is processed a few miles down the road from the Terra-Green plant, according to this article:
http://www.suite101.com/article.cfm/4265/20870
Regards,
Matt