Jehovah's Witnesses showed up at the door for first time in 15 years

[Black]

modelamac wrote:
Just tell them politely that your choice of religion or religious belief is not something you discuss anyone, that if you want to learn about their religion, you will seek them out at that time. Then say that you suggest they complete their mission elsewhere.

I just flat tell them that I'm not interested or willing to hear them out. Please leave and don't come back.

I know this may sound rather extreme, but I've discovered a method of dealing with them that seems to be pretty effective. Here's what you do:
When you answer the door and see it's Jehova's Witnesses, you tell them "no thank you." Everybody smiles (optional) and they leave.
Use this method at your own discretion and risk-- I assume no liability for any potentially dangerous consequences.