Fair to say I've never had any "problems" with Jehovahs Witnesses. I live in the last house in a rural community and in (non)Christian charity often invite them in for a drink and the use of the tiolet if they wish. During the last visit, a very hot summers day, I sat by the side of the pond drinking iced orange juice with two very polite women and explained my beliefs at some length - they listened politely but unfortunately one fell over and sprained her ankle when leaving - they ain't been back since!