I don't quite understand how this door-to-door word of God thing works. But I don't even know how door-to-door salesmen manage to sale any vacuum cleaners. Does someone actually go "Oh, now that you mention it, I should throw away my perfectly good vacuum cleaner now and buy this one from you!" or "Well I don't have any carpets actually, I mop and polish my floors, but hey you've convinced me, I'll get the place wall-to-wall carpeted tomorrow!" or "Yes I am between vacuum cleaners right now! And instead of getting a major brand one from a respectable store down the road where my whole family shopped for generations, I'll get this funky thing from you, random dude!" It's a mystery really. I just tell these people: "No thank you, we're okay for religion." For some reason it visibly confuses them.