For what it's worth, Daleks (according to the Dr Who series) are not robots. They're physically degenerate nasty little aliens who've built these encounter suits with mounted weapons in order to pursue their omnicidal agenda.
So there's a distinction between mechanically disabling them (eg, by cutting power to their drives and weapons) and killing them (eg, by teleporting a dose of poison into the chamber inside the suit where the "pilot" resides).
But the distinction is lost on the Major ("Just once, I wish we'd encounter an alien menace that wasn't bulletproof!!")
Bear