Enough pressure from the anxious and politicians create another scare.
Pesticides are essential to food and feed production. Dose makes the poison, dammit.
http://www.thestar.com/news/canada/2014/02/05/ottawa_agrees_to_review_23_pesticides_after_pressure_from_environmental_group.print.html
And too many doses is poisonous. Who checks? The government? The users?