I've trapped about 10 rats so far this summer in the lean-to outside the back of my workshop. I've used the wooden Victor rat-traps, which generally work fine. Even caught a mouse once in one of them.
Recently in course of clearing out the shop clutter, I found an updated Victor rat-trap. It's the plastic kind that's very easy to set. It looks sort of like a big plastic clothespin. You squeeze the handle end and the bait tray automatically locks into place, but is very sensitive. So I set it between two wooden Victor rat traps in the lean-to, with a raw almond as bait. We'll see which one the next rat prefers ;-). Somewhere I think I have the mouse-sized version of the plastic rodent trap, but I figure the cats deal with the mice, as I haven't seen any around here since I got the mouser cat.