> And like the business with PCB's the opposite of that coin is DDT, > which you can actually eat without it hurting you, but due to some Actually thats extremely dangerous to suggest on a public list, although hopefully nobody reading is quite so stupid. It is persistent in systems and at least for women a very bad idea as it's reasonably well established its presence at birth has links to reduced abilities in children. > their larva under the skin which will literally eat you alive. I think > the business about RF is closer to this case than that of PBTs. I think you picked a bad example. DDT is strongly regulated almost entirely because it causes serious environmental problems if misused, and in part because misuse causes continued immunity growth in insects. As a carcinogen its classed as "anticipated human carcinogen" - which is the same classification as dangerous biohazards like ermm.. coffee. Alan