Step 1: Step 1
old scissors or diagonal cutter
slip-joint pliers and/or needle nose pliers
bamboo/wood skewers (from the grocer)
Step 2: Step 2
Step 3: Trigger
Note: Don't bend anything outside the yellow ellipse, if you can help it. Otherwise, you'll have to perform some painstaking tweaking of the trigger when you've finished the trap.
...when the trap is set, a length of the skewer will stand straight up in the hole, with a tight fit.
You'll put the skewer piece in later.
Step 4: Step 4
Note: It's also possible to do the following steps before mounting the trap to the can; it's a matter of whatever's most convenient for you.
Step 5: Step 5
Note: On this particular trap I mounted the screen at a 45 degree angle; usually I've mounted it so the warp and woof run parallel and perpendicular to the surface of the trap. Whatever catches your mouse will work fine.Use light wire to attach things. Twist it tightly with a pliers.Secure each corner of the snapper, then lay your twists down flat against the screen so they don't get in the way when you set the trap.
Step 6: Step 6
When you start trimming the wire around the edge of the can, notice that there's a minor issue right next to the trap. A portion of the screen has to be bent a bit so that it's actually inside the can. This is because it's beneath the hinge and is actually rotating outward when the trap closes. If you don't do this, thing's will bend weirdly when you try to open the screen to set the trap.
As you're securing things with the wire, you'll want to pay attention to where the retaining wire loops over the snapper. You can't let the screen obstruct its action. You can always trim out a piece of the mesh, if you need to.Whack on one end of the skewer piece. Shredding it a bit makes it hold your bait very well.
Note: Our infestation made it obvious what would make the best bait. The buggers had chewed on a Hershey's dark chocolate bar, among other things. I'll give 'em credit for good taste. So I used a lighter and melted a bit of the chocolate bar, applying it to the skewer along with some always-reliable peanut butter.