Oh what those little tots can get into! As the parent, it's your responsibility to do your best to make sure your home is as childproof as possible. The following is a 23-step guide on how to install cabinet locks* on floor-level cabinets in your home.

  1. Gather your tools: screwdriver, pen/pencil/marker, ruler/tape measure.
  2. In the corner where you want to install the lock, mark a spot one inch from the corner.
  3. Using the included double-sided tape, secure the inside part of the locking mechanism in the spot you marked off in the previous step.
  4. Using two of the included screws and your phillips head screwdriver, insert the screws through the existing holes in the locking mechanism and tighten them into the cabinet.
  5. After 10 minutes of fruitlessly attempting to bore a hole in your cabinet frame, go get a drill with a small bit and drill a pilot hole in the cabinet.
  6. Repeat step 4.
  7. Hold the door part of the locking mechanism against the door. Close the door until the two parts of the locking mechanisms meet. Align the door part of the mechanism so that it is in a position to be able to catch on the inside part of the locking mechanism that you already installed.
  8. Realize that it's not catching and locking because you installed the first part backwards, so the door part has nothing to catch on.
  9. Remove the part you installed in step 6, then install it again in the correct direction, as shown in Figure A.
  10. Repeat step 7. When you have it lined up properly, mark the door in the location where the door part of the locking mechanism needs to be in order to latch.
  11. Get really pissed off trying to mark a spot on the inside of your cabinet door while the cabinet is open only 1.5 inches, using a marker that is more than 1.5 inches long.
  12. Remember that you have double-sided tape, try to use that to hold the door side of the locking mechanism in place. Get frustrated when you realize that you still can't do it, because the tape isn't strong enough to hold the piece in place while disengaging the lock.
  13. Eyeball it, and mark it off with your pen.
  14. Proactively drill pilot holes through the existing holes in the locking mechanism, taking care to pay attention to the fact that the doors really aren't that thick, and the only thing stopping you from drilling a hole clear through the door is your own desire to not do something really stupid.
  15. Using the provided screws, fasten the door portion of the locking mechanism to the cabinet door. As you begin to tighten the screws, realize that one of them is screwing right into the joint between two pieces of wood, and pray silently that you don't split the panels when tightening the screw.
  16. As the panels begin to split, curse the company out loud, wondering why they woud ever make it so this happened.
  17. Discover that they probably meant for the latching hook on the inside part of the locking mechanism to be one inch from the inside corner. You measured it off so that there was a one inch space between the side of the piece and the corner, so the hook was actually closer to an inch and a half from the corner. Had you done it the other way, the two door screws would have straddled the joint, and you would not be facing this problem. Idiot.
  18. Drill a slightly larger pilot hole in that spot to avoid having the screw do additional damage.
  19. Now that all parts are properly fastened in place (as shown in Figure B), sit and stare at the open door for several minutes. You won't want to close the door, because you'll be afraid that the two pieces are not properly aligned and the lock won't work. This is normal.
  20. Slowly close the door.
  21. Stare at the closed door for several minutes, fearing that the door will open unobstructed when you pull the handle, exposing your ineptitude as a parent and handyman.
  22. Very slowly open the cabinet door, audibly promising to bring harm to the "technical writers" who drafted the included instructions if this does not work. The door opens only an inch or two, then the latch engages as expected. Let out a sigh of relief.
  23. Rather than install another lock on the other two cabinets, move everything from those two other cabinets into the one that now locks.
Congratulations! And pat yourself on the back, knowing that you've done a good thing for the safety of your child.

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* Remember that childproof cabinet locks are not a replacement for proper adult supervision. Neither are cartoons.