Can there actually be a 3 day crash course for potty training. Please explain to me how a child can do 3 day potty training. It amazes me that I would find such a thing. How many days does it take for child to be potty trained. At which age is a child potty trained. What do the parents do to teach the child how to go potty? Is it easy with kids, or does it takes time for them to understand?