Any parent will tell you, it always happens at the worst possible times. In the middle of the grocery checkout line, during dinner with the in-laws, right before a visit with Santa. You look down at your cherubic toddler and see a tell-tale wet stain spreading across the bottom of her jeans. Potty training isn’t pretty. South Hill mom Heidi Santiago knows just how frustrating the process can be for both parent and child. When she married her husband, Cory, he was just starting to toilet train his youngest child. It wasn’t going well. A seventh-grade teacher at the time, Santiago said, “I looked for books. They all said we should make it fun and positive, but there was nothing out there to make it fun.”