Those box traps are good for all round control of anything from mink to rats .When I was keepering we trialled possably the first use of these in England.We were given 100 and had strict instructions not to bait the traps with anything as they were looking at what could be caught using the pest animals inquisitivness as oppossed to hunger.Placed under dry stone walls ,under footbridges,ditches and in feed store areas ,we caught everything including a wild polecat which was taken away by the university doing the study .The only flaw in these is that they allow the gnawing vermin,rats ,squirrels