The JW's are quite strong in Edson, but what should our attitudes as evangelical Christians be? Should we see them as nuisances to be avoided? Or should our hearts be moved to view them as people who need, just as much as anyone else, to come to know the truth about Jesus Christ as God and Saviour?
Surely the latter. In my experience, we cannot argue them (or anyone else) into the Kingdom, even though there are many points on which they are in serious error. It is only God, by His Holy Spirit, who can open someone's spiritual eyes and bring them to new life. Becoming bogged down on points of doctrinal differences can be counter-productive. But aside from doctrines of God and the Trinity, one of the areas upon which I think it effective to focus is our salvation, and our assurance of it. JW's do not have the concept of what it is to 'know' we have eternal life, even though the Bible promises us that we can (1 John 5:13)
I once told a Witness that I had been born again by the Spirit of God. To them, being 'born again' cannot happen in this life. It is something future. But then I quoted, to clarify what I meant by being born again, 2 Corinthians 5:17
Therefore, if anyone is in Christ, he is a new creation; the old has gone, the new has come!The tense is present, not future. We can know here and now, that we have new life and that our eternal future is secure.
This is where I personally would try to focus. That we can have a hope and assurance by trusting Christ right here, right now, that they can never have trusting what they are being told by the Watchtower.
It is, however, important to be well equipped in any discussion with the Witnesses who come to our door, lest we be caught offguard by some of their well rehearsed and, perhaps to the uninformed, persuasive, arguments. One of the best resources I have found is This booklet from John Ankerberg
Jesus died for whosoever will come to him in faith, and who knows but that might includes these visitors to our doors we may see as 'unwelcome.'