Good to see someone else from MA on here... Finally. I am in eastern MA, I can't offer you too much information on the "Green" and "Organic" control products, but from what I hear they do not work too well. I know there is a company called Simply Safer that uses them a lot, and they are a pretty big company as far as I know.
I have actually been looking for a few small landscape companies in MA to get together every couple months to discuss all aspects of landscaping -- What works, what doesnt work.. etc.
Let me know if interested.
My email is Jonathan@drivenlandscapes.com