I’ve only had a couple run-ins with JWs. I respect them for what they are doing. I believe their intent is righteous. But I am a practicing Catholic. Oddly, I have found that telling them this does not deter them.
On the one occasion, I tried to cut the “solicitation” short by telling them my religion. I sensed some frustration as they continued to ask me questions. I politely asked, “Do you think Catholics should be allowed in Heaven? Do JWs judge Catholics?” After a pause, they stopped and I politely told them good bye and God bless.
Tell them you believe in the Holy Trinity.
The best thing is to be brutally honest and confrontational with them: say “I know who you are, I’m not interested, this is private property, do NOT return or the police will be called”. They will write your address off their “to do” list posthaste.
CC
Had that experience - once.
The next time, I had two sweet young things, 18 or so, come up to my porch in Florida. I asked them if they were witnessing and they said yes - and started their pitch.
When they paused, I asked them if they ever heard of the planet Niburu. They said no, so I went into an accelerated version of Sitchin's "12th Planet".
Their eyes got wider with each passing moment, until one said "Sorry, we have to go now" and they high-tailed it back to their car. They didn't even leave a copy of "The Watchtower".