Asimov's gonna be spinning in his grave :(
If they're that scared of killer bees - I mean robots - why not just install Asimov's famous Three Laws of Robotics, then? No one will be killed, maimed, or get hurt feelings from any form of robot if this happens!
1. A robot may not injure a human being or, through inaction, allow a human being to come to harm.
2. A robot must obey the orders given to it by human beings, except where such orders would conflict with the First Law.
3. A robot must protect its own existence as long as such protection does not conflict with the First or Second Laws.