Looking for a sweeter smelling nursery? The Playtex Diaper Genie Diaper Pail Carbon Filter is built-in, with activated carbon filters. This is the simple, effective way to help keep your nursery fresh, helps to absorb, control and lock in strong diaper odors. The insert is convenient and easy to change when taking out the old insert. The Diaper Genie Diaper Pail Carbon Filter insert makes it easy for you to empty diapers while locking in any foul odors. The Diaper Genie Diaper Pails are the #1 selling diaper pail brand. This refill tray contains four Carbon Filters, helping you to keep your nursery fresh.