[citation needed] Ash urns are usually mounted on a pedestal, and present a media such as sand or gravel for a smoker to snuff cigarette butts.
This type of cigarette receptacle is also common in ash/trash combination units, with the urn placed on top of a trash bin below.
[3] Wall mounted cigarette receptacles are manufactured in a variety of shapes, sizes and butt disposal methods.
Units with all-metal construction allow disposing of cigarette butts into a container with no other extinguishing media required.
[citation needed] Many free standing cigarette receptacles utilize an oxygen restricting design that extinguishes still burning butts.
[citation needed] Other free standing receptacles, such as those made of pre-cast concrete and stone aggregate materials, rely on water, sand or gravel placed in the collection bin to assist in extinguishing disposed butts.
[citation needed] Some cigarette receptacles contain unique design features at the butt entry point.