In my case, I didn't use a separate potty chair and I'll tell you why. In my opinion it is just double the work. You are training them to use the potty chair and then you will have to teach them again to use the actual toilet. So I went with the kids toilet seats and for me it was easy breezy and just trained Ben with one step. Of course, since they are small you will need to get a stool and help them at first but you will see how smart your child is and how fast they catch the grip of things at this age.