I have the parents supply them and yes, I keep them all separate in labelled wipes boxes. The cost could add up if you have a few kids in diapers (I have all 5 in diapers!!!) and especially if you have some of the type of super poopers I seem to always have...hahaha! Another way you could do it if you want to use just one box is to have the parents pay into a wipes fund or ask each of them to supply a big bag every few months. I do see your point about it being easier though and I hate the scented kind...I just ask parents to get unscented if they don't already as the scent bothers me.