How to handle new Scientologists?

This guy is probably an "FSM" who brings people into Scientology and gets commissions.

You encounter someone who dabbled in organized Scientology a few years ago, bought some auditing, and did (mostly) "grade zero" (communication processes).

You ask him, "Tell me about your grade zero auditing," and when he says he liked it, do you:

1) Acknowledge him, and say, "There's some good stuff at the beginning, but it's not representative of what follows. The nature of auditing changes and becomes, gradually, more hypnotic, and, because it's gradual you're expected not to notice. So beware."

Or

2) Do you tell him, "It's all bullshit!"

Or?

How to handle new Scientologists?