64-year-old John Dohms, who suffers from dementia, walked away from his Newark home September 13th.
His brother Jim Dohms says a bloodhound picked up a scent two days later near Hockessin, but there has been no sign since.
Dohms says his brother is an avid outdoorsman.
"John is a survivor so the question is where is he and is he getting any kind of assistance from anybody," Jim said.
If you have seen John Dohms call Newark police at 302-366-7111.