I think it's feasible, but it would take a LOT of time and effort to train the mink.Ya looks like he's in Utah and has the day job. Curious if this is an actual feasible idea or just people seeing the videos and suggesting something that isn't an option at all.
I wouId love to see these mink in action IRL.
Hard to say how effective it is beyond the thrill of watching the hunt and killing of more than few rats.
Have seen other vids of a guy using ferrets for rat eradication.
Another guy has a pack of small terrier type dogs.