He should have killed them upon discovery.

http://kwgn.com/2014/05/14/343208/

PALISADE, Colo. — Killer bees have been discovered in Colorado for the first time.Here’ s the question: Is the discovery a fluke, or are they here to stay?
FOX31 Denver’s Kent Erdahl went to Grand Junction Wednesday to find out. He found that a test at a second potential hive could hold the key.
Rob Fenwick owns Fruit Basket Orchard. He has a close relationship with bees. He makes sure they have what they need to pollinate his trees and plants. But if you think Rob was surprised to learn that killer bees had been confirmed in this area, you’d be wrong.