There are other already made substrate sold by beetle venders in which their products are made with high quality materials if that's what you're asking by the grade of the substrate. However, you can't really find them here in the US so you'll have to purchase them overseas and they're usually expensive. Bugsincyberspace has pretty good hardwood substrate though! As for the consistency of the substrate, as long as it's not saturated with water and flour/wheat bran, you should be fine. I do not have extensive knowledge on the types of kinshi since I'm not a stag breeder but I'm sure you can find more information online. You could make large quantity, but the preparation, maintenance, and cleanup will be rather troublesome.