this one is for ditch, we used to catch a lot of mink in traps very similar, but we found that if you leave the bottom of the traps like they are they wouldnt go in, so we covered the bottoms, with a bit of fish in and as soon as we caught one , we caught about 11 maybe 12 after that, but like i said they would not go in a trap that they could feel the wire bottom, no matter what we put in there, so try covering the bottoms, it might help it might not , but you dont know untill you try.