I'll echo what
@spyralout mentioned. I've only used the Clonex gel. I put my fresh cuttings into Rapid Rooter plugs and into a generic humidity domed tray with a heating pad. I have typically experienced roots in 10-14 days on most cuttings. From my lifetime of cuttings, I've lost less than ten and I would gamble to say less than five. From my personal experience it works exceptionally well. But who's to say I wouldn't have the same results without it. I've always used it. That's just my experience with the Clonex gel.