I like #110s in runs in front of bank dens or huts. After I clean out the rats, I leave the trap for a few more days after the last rat is caught. My initial setting may have 2 or 3 traps blocking that run. After no action for a couple of days, I pull all but one near the den opening and leave that one set. I may check that empty trap for another week or more, but I have taken enough mink at these locations by doing this that it is well worth the wait, too.
My other favorite mink set is those tiny, little trickle streams that are often dry in hot summers or if there is water they are little wider than a #110 itself in spots. I find narrow points in the flow, block it with a #110, and fence off the trap on either side up each bank if necessary. I catch a lot of mink in these little hidden spots.
Only other set I make for mink is in same little stream locations but is a baited pocket set and I make this to take either coon or mink.