is doing is giving your diapers a good rinse. it is rinsing away most of the urine and most of the poop. you want to do it on cold, because hot water will set any stains that you have, which you do not want. you want those diapers coming out white and fluffy! also, water is your friend. the more water you have in there, the better.
if your diapers are a little dirtier than normal, let them soak for an hour once the rinse cycle is full, then run the rinse cycle. this will help loosen up any "mess" that may be tricky to get out.
wash cycle: after i do 