I did read the how to guide but I am still confused. I have a couple questions ... 1. The one size pockets can someone explain them alone with the all in ones ? 2. Which are the best to use ? 3. How do you wash them? And how do you get rid of the poop ?! 4. The one size , can they be used with 2 kids @ the same time ? I have a 1 1/2 year old and due in September. 5. What do you do when your not home ? 6. Any other useful info would be great thank you so much !