For a flyer to "work", it has to be directed at the public. Yes, the dub household needs to get one too, but for them to be FORCED to read it, and to deal with it, there must be consequences.
They will have to face their neighbors, and the public. Also, if you know their "worldly" relatives, then they need it too. The dub needs to be FORCE FED.
You can lead a horse to water, but you can't make him drink.
True... BUT you can still drown the damned horse!