Trial and error, right? I tried every combo imaginable! Rinse, rinse, wash, rinse. Wash, rinse,rinse, rinse. Rinse, rinse, rinse, wash, rinse. But as I feared, my diapers still had an odd smell to them before I would even dry them! Hot water, cold water, warm water, homemade detergent, different diaper detergents, and nothing. Finally after about a month I figured out a new washing system to along with the new washer! Our system now is cold water rinse, hot water wash with detergent, hot water rinse, cold water rinse, cold water rinse. Phew! I do end up rinsing a bit more than I did with the my top loaders, but I don't mind! I'm thankful to have our new washing system down and perfectly smell free diapers again! Green and energy efficient!