I tried cloning with them, but I couldn't get them to root very well. I mean the would eventually root, but not very quickly. I have honestly found the easiest and most full proof method for me and cloning is using regular potting soil, cut big clones, at least 6 inches if not 8, trim the bottom nodes of. I have tons of aloe vera plants around my building, so what I like to do is cut a couple inches off the end of an aloe vera plant, delicately cut the outer skin off, and then chop up the inner go up place in a shot glass with some water, and soak the fresh cutting for like 10 mins. Then straight into soil water as you normally would water a plant, keep them under a humidity dome, and they root quickly and abundantly. You can also buy aloe vera juice to if you don't have aloe plants locally. 1 shot glass full of the juice will cover quite a few cuttings to.
They make all sorts of rooting aids, from clonex to just generic rooting powder from any home depot. They all seem to work about the same as far as the powder goes. The liquid clonex is one of the better ones out there, the liquid seems to work a tad better then the powder. But I like simple, and not having to buy shit. So free aloe plants > buying rooting hormones