We used Viva paper towels that we wet with water from a squirt bottle. For travel we use Babyganics. We've never needed to use diaper ointment. I don't see the point in using it every time unless the baby has a diaper rash. Petroleum jelly wouldn't let the skin breathe. I think some people use coconut oil for a diaper ointment. It's all natural and I believe it has other beneficial properties.
Married to a wonderful woman since 2010. Baby boy C arrived in June 2013!