Scary fact alert: Drowning is the leading cause of unintentional death among kids ages 1 to 4 years old, and it takes only a few inches of water. According to the Consumer Product Safety Commission, bathtubs are the second most common place young children drown (the first is pools).
The safest thing you can do? "Never leave your baby alone in the bathroom, not even for a second," says Kimberlee Mitchell, Child Safety Expert & Founder of Boo Boo Busters, Inc. "Lock all bathrooms off -- with a door knob lock -- to keep children from getting in there alone." (If you have an older home with smaller door knobs that don't typically fit door knob locks, a hook and eye lock on the outside is okay too.)
Obviously, there will be times when your child is in the bathroom with you (those days of showering or peeing in private are over, mom), so make sure you've child-proofed from floor to ceiling. Here's how.