A diaper pail having a top chamber with top transparent doors, and a transparent outer casing, allowing a user to see the rotating inner barrel as it spins within the transparent outer casing. The inner barrel holds a disposable bag and as it rotates the inner barrel untwists the neck of the bag, thus opening the bag for a soiled diaper to fall into the bag from the top chamber, and then the bag returns to its original twisted closed configuration. The soiled diaper falls into the bag while the doors of the top chamber remain shut, keeping malodorous gas from escaping. The visual spectacles provided by this diaper pail also act to change infant and toddler behavior by associating diaper change with a fun and fascinating event.