Solid waste should always be rinsed off a diaper prior to storage. This step is optional if the baby is breastfed. Diapers that contain only urine do not need to be rinsed if you do laundry every 1-2 days. Remove as much solid waste as possible from the diaper, rinse in cold water, and put it the diaper pail until wash day. Alternatively, use your tub or laundry room sink as a rinse station