[Hugh R]

This is old news. I studied bioaccumulation as an undergraduate 25 years ago (Environmental Engineering degree). Do you remember Rachel Carsons book "Silent Spring". Pesticides have their place, but they get over used, used for the wrong reasons, and like most things because they're cheap and effective. Most people don't want to plant a micro-ecosystem in their yard where one plant (garlic for example) repels yellow jackets, and disperse ladybugs which eat lots of aphids. Ironically, the banning of DDT accounted for millions of people in third world countries dying from malaria. BTW, DDT is still manufactured and used in many countries.