Advice needed finding owners after driving for dollars

[Mike Conner]

I have been driving for dollars and have a list of properties that are distressed and all are abandoned. In attempts to reach out to the owners I've searched the property appraiser, tax records, and used a skip trace service. I've sent physical mail, texted, and called. It seems the phone numbers I'm getting are old or not in use and many of the mailing addresses are PO Boxes with no replies so far.  Many of the owners appear to be older (70+), so I question if they are in a nursing home or something similar. Does anyone know a way to find out if the owner is in a care facility and how to locate their heirs or guardians that may want to sell the houses? What other methods of finding owners should I be using?