Think about the opening mechanism of your trash can. There are various options from the traditional lifted lid, to a swing opening, a pedal mechanism and even touch-free lids that open in response to the movement of your hand above a sensor. There are pros and cons for all of them. While a removable lid may do a good job of containing any odors, you’ll need a hand free to lift it. Similarly, while a touch-free sensor seems the easiest option, you’ll need to ensure that the batteries are kept charged—or your can is plugged in—in order to use it.