A point of curiosity that came up in a recent conversation: is there an easy way to distinguish LDS missionaries from Witnesses by appearance? I'd like to be able to ignore JWs without inadvertently being rude to Mormons.
LDS missionaries will be wearing white shirts and ties, and will have a black nametag that says Elder or Sister SO and SO, along with the church logo.
I'm unaware of JWs having any dresscode
), but they're real friendly.

My Mom, always makes them leave before they even make it to the door anymore, and then complains about the a**holes stepping on her garden or coming to the side door instead of the front or something for days...