Kids are curious creatures, exploring every nook and cranny of their digs. The littlest ones don't understand boundaries and the word "no," so it's up to you to keep them safe. When you have cabinets that hold off-limits items, keep your kids safe by locking the cabinets. Removing the ability to explore these areas keeps your kids safe and eliminates the possibility of a tragic injury.
Install cabinet locks on all cabinets that you want to be off-limits to your tot. Some locks install without needing tools and to install other locks, you'll need to drag out the drill and screwdriver.
Keep cabinets locked at all times. This will teach your little one that if she tugs at the knob, the door won't budge.
Tell your kid that the cabinets are off limits. Whenever he reaches for the handle or makes a dive for the cabinet when you have it open, say, "No cabinets for you. You stay out of this cabinet."
Be consistent when you are teaching your tot not to explore cabinets. When the answer is always "no," he'll learn that you mean it when you tell him you don't want him to open cabinets.