Toilet training should start when your child shows signs that they are ready. There is no right age to begin. If you try to toilet train before your child is ready, it can be a battle for both you and your child. The ability to control bowel and bladder muscles comes with correct growth and development.
Children develop at different rates. A child younger than 12 months has no control over bladder or bowel movements. There is very little control between 12 and18 months. Most children don't have bowel and bladder control until 24 to 30 months. The average age for toilet training is 27 months.