Multiple owners have said that this product controls smells better than the Diaper Genie, but it isn't as good when it comes to bulkier soiled diapers. To change the bag the consumer pulls a lever on one side of the pail, releasing the lid. Inside there is another lid to lift before the adult can get to the dirty diapers. This two part system reduces smell and prevents curious toddlers from getting into the dirty diapers even if they manage to operate the lever. A negative feature of this product is that it is impossible to tell if the Diaper Champ 4000 is full until a diaper has failed to go down the shoot.