Success Mailing to "other" Liens (Hospital, Mechanics, HOA)?

[Cat L.]

I am in the Dallas/Fort Worth Texas market. 

My question is about a list I get in addition my foreclosures/tax sales, etc ... I get a list of liens (hospital, mechanics, HOAs) ... 

I have not been mailing to this list, but I am starting a multi-touch campaign and I was wondering if others had experience with these types of leads and whether they generated actual deals ... I can't find much on this list ... most talk about liens focuses on tax liens. 

Any experience or advice on how to hit these would be appreciated!