I found a humors guide to getting rid of Jehovah's Witnesses. I have my own methods. Usually I just tell them I'm an atheist and they walk away. If they happen to piss me off, like they do when they knock on my door at 8:00 AM on a Saturday morning, I'll answer the door with a grumpy smile. I'll ask them to give me a second or two to "take care of something important". And then I'll leave them standing on my doorstep for 10 minutes or more. I figure if they waste my time, I can waste theirs.