just heard this on the radio. I believe it was sprayed on trees to combat aphids. They said they covered the trees w/ netting to prevent more deaths. Bumblebee's are good insects.
:http://www.latimes.com/news/nation/nationnow/la-na-nn-bumble-bees-die-in-oregon-20130621,0,1466945.story
:http://www.latimes.com/news/nation/nationnow/la-na-nn-bumble-bees-die-in-oregon-20130621,0,1466945.story
A pesticide used to control aphids has been singled out as the cause in this week's deaths of tens of thousands of bumblebees in a retail parking lot in Oregon, state officials said Friday.