Hi Moondog,
Yes - none of what is mentioned in the blurb is new, and a lot of it works. The problem is that, on a commercial scale, the effectiveness tends to drop off.
It's fine for your kitchen and small garden so go for it - although some of this stuff still needs to be handled with care and some of it will taint food quite badly.
Pete
God is our guide! from field, from wave, From plough, from anvil, and from loom; We come, our country's rights to save, And speak a tyrant faction's doom: We raise the watch-word liberty; We will, we will,we will be free!