I once had a guy come to my office to try to set us up as a distributor for a competitive piece of useless crap like that (Green something...). He spent 90% of the time I gave him bad mouthing the Stetzerizer filter. I was giggling inside the whole time because to me, it was like listening to a fox trying to convince chickens that HIS protection service was better than the wolf's protection service. Either way it wasn't going to turn out well for the chickens, so what difference would it make?
I was hearing him out because my partner thought maybe we should get in the business as a side line. What a load of crap it was. Their REAL business is in setting up a MLM distributor network (like Amway) where the distributors all buy inventory and "training materials" for exorbitant prices, then when you find out you can't sell them they refuse to take anything back, unless you get some other schmuck to sign up, they give you a piece of HIS action.