The insecticide was Safari (Dinotefuran) which is toxic to bees, and it has been confirmed that it killed them. http://www.opb.org/news/blog/ecotrope/state-con

The insecticide was Safari (Dinotefuran) which is toxic to bees, and it has been confirmed that it killed them. http://www.opb.org/news/blog/ecotrope/state-confirms-pesticide-killed-thousands-of-bees-in-wilsonville/ http://www.opb.org/news/blog/ecotrope/state-confirms-pestici... This was also concluded a few days ago: http://www.opb.org/news/blog/ecotrope/xerces-society-wilsonville-bees-died-from-pesticide-poisoning/ http://www.opb.org/news/blog/ecotrope/xerces-society-wilsonv...