To Andy, Thanks for the fine disertation. How sad it is that the bottom line for so much these days is the dollar ( pound, lire,mark etc.) I believe I saw this here: "One day we will realize that we can't eat money" Some science is good, but we all know stories of bad chemicals (DDT). I still do not like to put something in my hives that it is reccommended that you wear gloves when installing. billy bee