I cut up a bunch of old tshirts and they work just fine. I do have some that I purchased, and flannel squares work great too. I use a foam pump with a couple drops of Dr Bronners baby unscented and water, pump it to a dry wipe, have a spray bottle of the same if I need some extra. I have way too many, but tshirts go a long way.
Lacee- Mommy to my girls Norrah(4/09) and Naomi(1/13) Expecting #3 (10/14)