Let your child wear underwear all week long with their regular clothes. Girls may wish to wear dresses because it is easier to use the potty while wearing a dress. Boys may wish to wear sweat pants or shorts in summer. Even during naps and bed-time. If your child is not trained within five days, wait one month and try it again.
All children have different developmental stages.
Your consistancy will teach them self-discipline at an early age. Lastly, I would recomend using the regular potty while training. Use a step for smaller children and if needed buy the small potty seat that attaches to the regular toilet seat. Begin when child shows interest or no later than 3 years old. You pay only shipping and handling.