My conibear traps with a 110 catch mink, and my weasel boxes have a 3 inch opening. The rat traps dont always kill no, but traps have motion alert camera. What the trap doesnt kill, the .22 and I do.
Extra long weasel boxes with an eclosed bait box at the far end. And a small sniff hole to the exterior on that end. Large rat trap inside.
Also these around.