Charging more for diaper age/potty training

Do you charge more when the child is in diapers? How about when the child is potty training?

I don't charge any different, the only thing I do is seperate my infant and toddler costs by a $3 a day increase. I am currently helping my new family with potty training and finding its taking a lot more time and energy then I expected. I am also finding pressure from them if the day didn't go well. Whats the normal expectation within daycares on this?

I don't potty train. It's not my job. Potty training is the parent's job. I will take kids to the bathroom when they can tell me they have to go. Then and only then will I do anything remotely connected to potty training.