These folks are like certain politicians you see on the TV. They are armed with "Talking Points" and little else. Bone up on some of the rules of logic and if you are so minded, have a little fun.

Like a good chess player you have to get them out of their "book". Most are really poor at thinking. Their aim is to direct the conversation (monologue actually) and get you to agree with certain statements. The unwary find themselves suddenly in complete agreement with the cult's version of reality. The main way they do this is by re-defining the meaning of certain words and phrases. And there are other charlatan tactics as well. This is mainly true of the Mormons and JWs and these two are the ones you will most likely encounter on your doorstep.

If you know any of the history of these two groups you can really enlighten them. When you get them out of their talking points they usually go running to their elders in confusion. Then the elder makes a call (if you allow it). He has learned greater set of "pat" answers with which to sway you! On it goes as long as you are willing to tolerate it.

There are other groups as well as individuals who take the admonition of the Bible as a divine directive and are honestly concerned about YOU and not THEIR religion. These will give you a more honest conversation, discussion. Of course, if you are NOT interested and NOT in favor of wasting your time you can dismiss them. If you REALLY find them annoying you can always make an official police/sheriff's report of criminal trespass and the NEXT visit will land them in jail!