Purchase a pail preferable with a lid.
Wet (urine) diapers need no rinsing just place diapers into pail. Remove stools into the toilet bowl then rinse soiled diapers before placing into pail. Wash diapers within 3 days.
You can also add 1/2 to 3/4 cup of vinager and presoak diapers in washing machine a few hours or overnight in cold water before washing load.
*Rinse diaper pail before refilling; Be sure to disinfect diaper pail at least once a week.