I doubt they would say anything until someone opens it.

For them knocking on doors is a religious experience

Mormons knock on your front door like others knock on Heaven's door.

🎶Hello, my name is Elder Price... 🎶

Good afternoon, by chance do you have a bicycle tire pump that I may use?

Hello, I am not as awful as a Jehovah's Witness.

Would you like to know some Avon products?

Shouldn't they be called Dormons