I had to start using Tide powder for my cloth diapers, and since it got them cleaner than anything and didn't cause problems, I now use it for all our laundry.
OK, so I have a stupid question about powder... I'm sure I've been doing laundry wrong using liquid anyway, but I've always just thrown all of the clothes in, added the liquid detergent on top, and started the water. I know in theory you're still supposed to fill the tub with water and detergent first, blah, blah, but it works and they come clean well. I would imagine with powder you'd have to dissolve it in the water first? I can never tell how freaking full I'm filling the washer when water's already in it! I felt like a laundry idiot the one time I tried to use it lol.
DH and I had a talk about this years ago when he was doing laundry. I always put the detergent in first and let it foam up for a few minutes. DH use to put the detergent on top of the clothes and that would annoy me. It's one of my pet peeves I guess.
We never used special detergent for him. We all use Cold Power here, which is a cold wash detergent and supposed to be better for the environment. But yeah, all the clothes get the same wash. I'm kind of blase about washing. If he ever developed a rash of course I would change it.
I use All Free and Clear for all of us, always. I don't add softener to the baby's wash. That's the only difference. All my laundry gets cold washed except sheets and towels.