Yes, I tried it several months ago for a week or so. No benefit whatsoever. However, during that time, the company was very helpful in trying to optimize its potential by giving me some pointers over the phone. When those did not work, the company kept their word and refunded me exactly the amount they promised. (I don't remember the exact amount refunded, but it was almost all of it.) So it really doesn't cost much to try it.
In their literature, they don't claim that it helps everybody, but with a "almost" 100% return of your money if it doesn't work for you, why not try it?
I hope this helps, reverett123.
Keith (kk13)