i'd hold off on the baby wipes. They contain oils and soaps that are designed to interact with urine and feces. If your seats are covered in urine and feces. . .by all means, start with a baby wipe. If they aren't, you're just degrading the leather. The rationale of, "they are gentle enough to use on a baby" doesn't hold water for this simple reason: our skin constantly regenerates--when the oils and soaps in baby wipes remove skin cells, it isn't a big deal because your body naturally replaces them constantly--unless you have a leather seat that i'm unaware of, your leather is not going to regenerate.
a quick internet search will tell you to stay away from baby wipes. for every one person that uses them, 20 tell you not to. http://ezinearticles.com/?Why-You-Should-Never-Clean-Leather-Using-Baby-Wipes&id=1227548
if it's working for you Dingo, stick with it. . .but I've seen it ruin seats in a BMW.
You need to find a pH balanced cleaner to clean them first. In the past, I've used (and been happy with) Pinnacle cleaner. It doesn't have a perfume scent like a lot of "cleaners" do. Apply with a Cobra brand pad, a cotton rag, or a leather brush and wipe away the excess when you're finished. The second step is to re-condition the leather. Since it isn't growing like skin, you have to care for it a little differently. The best I've used for the price is Lexol (and it maintains/renews) the leather "smell." I'm going to pick some up today for my week old 2012 Edge. O'Reilly's auto-parts carries it in all of their stores (I had to search for it this morning), and it's about $10/bottle.
hope this helps--not trying to start anything with Dingo, it's just fact that baby wipes do more harm than good. just look at the science behind what's in them. . .