Please bee folk, I did a little playing with graphs and looked at various toxicity data on Imidacloprid and plotted on log-log graph to find the power law. It's disturbing to say the least. If you are wondering why we don't see residue in collapsed colonies, the answer is that the effects happen at unobservably small chronic doses.
The post is here: http://squashpractice.wordpress.com/...-imidacloprid/
We've got to follow the Europeans and get rid of this stuff!