I use Dipel for dusting cole crops. It is bacterium thurengenisis, which is harmless to humans, but paralizes the worm's stomachs and they starve to death.
Buckytom, I have heard of your organic cocktail, but have never tried it. From what I understand, it also discourages rabbits and deer.
My Grandma used to make her own lye soap, and after washing clothes or scrubbing the floor, she dumped the soapy water on her garden plants and never had a problem with bugs.
They make a product called "Insecticidal Soap" that I used to use in the greenhouse, but it's not the same thing. I had to pay hazardous shipping charges to UPS when I ordered it, so it's obviously not grandma's lye soap.
I think you can still buy lye soap from organic catalogues and the like.
We get by with a little help from our friends