I use Fish heads of any kind (free from the fishmonger)
I’ve only caught mink with fresh bait, they don’t seem to go for anything rotten unlike foxes.
There are people on here that do allot more trapping than me so are better qualified to answer your question , but that’s what as worked for me.
While we are on the subject does or has anyone use scent lures to trap mink (Squid Crayfish etc.)
And did you have much susses with them?