I think it would be much more economical to just line up all old, frail, handicapped people - you know the type (useless eaters) - and shoot 'em. Every last one of them. Right through the head. Then drop their bodies in a mass grave - you know like they did with the Jews - and get rid of them all at once. Your method is too costly and would take too much time.
We could label my method: The Judge Greer Final Solution.
Great idea!