I am a real Ass, I get in their faces, I yell, and cuss. I try to make them feel as uncomfortable as if I were in their house

I have fun with them. I offer to give them 5 minutes of my time to discuss their god if they give me 5 minutes to discuss my atheism. Then I politely close the door and say 'let's not even waste each other's time'.

My uncle was looking outside his front window a number of years ago. He saw 2 JWs going from door to door, heading his way. It was an older woman and younger girl, maybe 20 or so. They stepped on the porch and he opened the door with "Howdy, gals! Come on in. The old lady's gone and we can have a good time!" They took off as if someone were shooting at them.

I ask a bunch of questions early on that I know they don't like to answer, and they quickly want to leave. I turn it into a game. How soon can I make them feel uncomfortable without just telling them to go away?

Start talking about aliens

Run and hide. No, seriously politely tell them I'm not interested in what they are saying.

I once told a Jehovahs Witness that I didnt see the accident and then closed the door.

I haven't had to deal with them in many years, but I used to just tell them that unless they were prepared to talk to me concerning my sexual preferences and experiences (which was always refused, for some reason), their discussion of religion was just as repugnant to me.

I used to be the one knocking on the door. I was indoctrinated from a small child and nothing I ever heard on "visitation" from someone objecting it got through to me nor deterred me as I had been conditioned to think I was saving people by bothering them. I don't open the door unless I've ordered food or can look out and see who it is, etc.

I am pretty tolerant, but if I can brush them off, I will. Sometimes I just tell them I am an atheist, and this can get an interesting reaction. Other times I say I don't discuss religion with strangers. Once upon a time I became friendly with an LDS gal, and she would stop by regularly. I was always polite but never took her up on her invitations. Another time a Baptist minister who lived nearby stopped at my house, and I told him I was Buddhist. He proceeded to put down Buddhism, which I thought was very foolish of him. Now I live on a boat, and I don't have this problem. No door knockers of any kind.

I used to ask them to leave my property, that they are trespassing and not welcome. I now have a sign on my door saying " No Soliciting, No Exceptions. If we don't know you, don't bother us." That has seemed to work so far. It also keeps the kids selling magazine subscriptions away.

sometimes I just listen to what they have to say , thank them and say good bye.Its intrusive but they can still have their beliefs. If I am busy I just say so.

I tell them that I am NOT a believer and my life and time are devoted to the real world and proven scientific FACTS, not something or someone that has never been proven to exist.

I say that I am an atheist and that there is no God - they turn and leave.

I tell them that I worship Tupperware and I would love to discuss, in detail, the most holy 'burping seal' that makes my the creator the source of all moral authority AND supreme freshness. It tends to be a really short conversation after that.

I don't. My dog does.

I tell them I come from a family of seventh day adventists. Most run away on hearing that.

Not interested.

I actually had a nice chat with a crew of Mormons who really wanted to know why I had no beliefs. It was a mutually respectful experience. Other times I had to be very direct.

I try to present reasoned argument and intelligent rational discussions with the door-knockers but with little effect! Once those eyes glaze over......

I tell them that I'm an evolutionary biologist and that I'd love to have a chat

If I have the time I enjoy the door knockers because most of the time I know more about their religion than they do. When it comes to Mormons I ask them if they are wearing their "holy" underwear. They get nervous, especially when I ask them to share the vows they took to become an elder. I tell them that I think it is kind of dishonest to ask me to believe in something that they can't tell me completely about. I ask them if they were going to buy a care and the salesperson told them that he/she was not allowed to discuss certain things about the car until they bought it. They answer that they would not buy the car. I say to them that the same issue is true of their religion. How can I truly understand an "buy" it if they can't disclose key parts of theirs.
I use a different approach with Jehovah's Witnesses. I ask them if they are total vegetarians or vegans. They say no they are not. When I ask them about not taking blood into their bodies via transfusion, why do they stop there? If they are not to take blood then they must be vegetarians to be consistent. If they, persist, which they usually don't, I have them open their Bibles to the one place in the Bible in Corinthians where it says that the Christians were not supposed to drink blood. I show them that the context had nothing to do with blood, but with partaking of food offered to idols. Then, I move to more direct reasons why there is no Jehovah, showing them that their argument from their proposition is not provable and the burden of proof is on them. For some strange reason they tend to avoid my door after that.

They are like predators in the sense they look for psychologically weak people who are easy to convince and brainwash. I tend to just get rejected by religious people automatically. But its fun to play religious too. Its a sort of fun game of fantasy discussions.

I let the dog handle that. They knock, she hits the door in full protection mode, they ask if she bites and I say she might. They usually leave or just slip info leaflet in a crack of the door. It doesn't make since to talk to them, they are always right and you are wrong.

Some people are rude to them, but I see no reason to mistreat anyone. If I have time, I'll talk with anyone who comes around. I came to my current stance on religion after a lot of study of theology, review of philosophical concepts, a modest understanding of science, and a great deal of introspection. It's unlikely anything they say will sway me. But if they're out in the cold or the rain and want to come in, have a cup of coffee or tea, and talk for a spell, I'm more than willing to oblige. And — who knows? — they might leave having been converted themselves. Ha!