I've always liked the LDS more than the JWs. JWs you can't get rid of with weed-killer, LDS usually go away if you ask them to.
I could offer them some birthday cake...
I can usually get rid of the JWs, but what bugs me about them is that when I was living in Milwaukee they always seemed to come by early on Saturday morning while I was still in bed--which is probably how I managed to get rid of them come to think of it, because I'd come to the door in my pajamas half-awake and cranky :)