Where I live in the UK we have something called a "no cold calling" sign up for certain areas - so whatever you are doing you cannot call without prior arrangement. It tends to be areas with high elderly ratio or in our case many half way homes for learning disabled folk - in other words to protect the vulnerable from pushy/dodgy doorstep sales.
Should apply to cults but since it's my step dads brainchild and he helped formulate the legal side and push it through parliament I'm gonna ask when I see him boxing day.