I find a mineral lick on the corner of our property and the adjoining property. We don't have permission to be on the adjoining and they don't have permission to be on us. We clearly have the better hunting area, so I guess putting the lick right on the border (touching the property marker), they're trying to pull deer towards them. The thing is, the season has been going since September now, and I know you can have that out as long as you are not hunting within' a certain distance or hunting the area at all....but right after I found that, I found a blood trail on our property heading away from the lick. Another guy that hunts on our track, said he saw a man carrying an arrow two days before, trespassing and walking from the lick. Does this sound like a baiting issue to you? It does me.

Also, we don't want to accuse them of baiting when we technically haven't seen them hunting over it & it's not on our property...but do we turnthem in anyway?

Oh I failed to mention, the guy who owns the property is a good buddy of my dads. As in, they have a beer once a month together and went to high school together....what to do?

A few observations & questions from what you wrote: is baiting legal where you live? Is using a 'mineral lick' considered baiting where you live? Do the hunters on the adjoining property have permission to pursue wounded game across private property lines? What are the states wildlife laws concerning pursuing wounded game across private property lines?
I pursue a 'black & white' attitude concerning the laws----there is no gray area when general enforcement is due. If it's illegal then there's no question about what is right.....or wrong.