How to approach a tax delinquent seller as a wholesaler?

[Victor Maddox]

I've narrowed down my first few deals and all of them are in the state of pre-foreclosure due to delinquent taxes, but I'm confused on how I go about approaching the homeowner. Do I go the normal route of skiptracing, calling them and explaining how I want to help them? I figured this would be the case but then again I wasn't sure if that would be the way to go about it that would be the most welcomely received? What about if I get questions like how I knew their situation or #? Any tips on what to say?