Being a father of several babies, I can say they leak like mad. It seems like a constant slow leak and after 3-4 hours the diaper is a complete wreck. Mine were in cloth for the most part and to say they were wet was a gross understatement. Dealing with poop was another matter that ranged from not so bad to "how the hell am I supposed to clean that?" Get out the trowel and take your time. At some point, when other babies show up, or you are just sick of changing diapers, and the kid shows signs of holding their pee, then it's time to potty train. Changing diapers and their care takes a lot of time and potty training cuts it down to nothing over time.