I personally feel pull ups are a waste of money. I am a mother of two and toilet trained my kids using diapers and when the diapers were dry after a few days being dry from being put on the toilet every half hour I put them in underwear. I have been running my business for 6 yrs and have trained over 7 kids the same way I did my own. As long as the parents are consistent and following the same routine then the kids can grasp the concept. Also I strongly suggest the parents take a weekend when the child is showing signs of being ready to place the child on the toilet every half hour or so and limit the intake of liquids at one time.