Ask them for their home addresses (they always come in pairs) and names so that you can visit them unannounced in order to deliver some flyers on the pedophilia and child trafficking in their cult. Or have that printed, give it to them the next time they come.

I made a quite an impression the third time. They don't come 'round here no more, tell you what. I see them park and try to go to other doors, but they skip my house now. Conspiratards can defeat this.