Here in UK some households have a small sign with wording to the effect that:
1 We do not buy or sell at the door
2 We do not discuss religion
3 We do not discuss politics
4 You will be asked for your ID and then asked to wait while it is verified.
I am writing that from memory so it might not be quite right maybe someone here can correct me.
I personally never called on such households. The only problem was you had to be withing about 2 feet of the door before you could read the sign unless of course you recognized from the gate.
In other instances we were told for the "No soliciting" to offer free home bible studies. Funny but no one ever took me up on that one.