Re: Do you have a Whirlpool Duet front loader?
Mine was bought in 07, but I don't know what model it is.
My typical wash routine is
Heavy Duty wash on hot with extra rinse and Tide. Sometimes I do another rinse on top of this, but not often and we don't have stink issues.
About twice a year I'll put the prefolds through the sanitize cycle with super hot water and only a little soap.