It is usually around 3 years old. We train the kids to pee/poo in the potty since 3 months old. At their 1 years old, they can basically poo in the potty 70% of the time, and pee in the potty 30% of the time. When they became 2 years old, they can basically pee/poo in the potty most of the time. At 3 years old, they can start to hold their pee and tell you they want to go to the washroom. |