>But there is no doubt that a > portion remains in the soil and in some types clothianidin breaks down > painfully slowly. That was one of the main problems with DDT. Absolutely right Stan! But important factors to consider are the strength of binding to soil particles, the biolavailablity of the bound compound, and its potential to bioaccumulate (DDT's main problem). Not discounting your concerns, just helping to explain. -- Randy Oliver Grass Valley, CA www.ScientificBeekeeping.com *********************************************** The BEE-L mailing list is powered by L-Soft's renowned LISTSERV(R) list management software. For more information, go to: http://www.lsoft.com/LISTSERV-powered.html