User blog comment:MisterRandom2/Can an Angel Blade kill a demon?/@comment-1509826-20120606191650/@comment-1509826-20120607000542

Whats not? I didn't mean an angel blade is harmless to anything other than angels, I was just making a point, just cause it can kill a higher being, doesn't mean it can kill a lower being.

And onscreen evidence implies it can't.