For years I've used BT to spray on my cabbage, broccoli, etc., but in the past few years I've noticed it doesn't seem to be working as well for me. I've tried different brands, but always with that same result. It finally occurred to me that I've been using a bit of Dawn dish detergent to add to the solution to help it stick to the leaves, and now that Dawn (and so many other products) are antibacterial I may be just killing off the Bacillus. Does this seem like a logical conclusion -- or is something else probably going on here? (at any rate, I'm planning to try using s little of my Suave shampoo this year, instead of the Dawn)
