I also cut up flannel sheets and some old towels to use as wipes. To wet them, I bought a plastic dispenser for soap/shampoo and filled it with water and a few drops of baby oil. At change times, I just soak a bit of the cloth and the poo comes off really easily.

I only pre-wet cloths when we're going out. It's so easy to do and much better for bub's skin.

HTH