Way to go Sally~
Honestly, at first I was a bit concerned about the notion of being gung-ho using Bt's. Reason being, most folks just aren't as educated as they need to be to avoid harming our threatened butterfly populations. Truth is, less than 5% of all our beautiful pollinators make it from egg to adulthood. So much to know, and people just don't seem to take a little time to do a little more. You have saved many people a lot of time, my friend!
It was a delight to see the excellent care you took in researching and writing this article. I hope it gets a very wide audience! Would love to see it in print and handed out to every gardener who buys any of the Bt's.