A toilet is a sanitation fixture used for the disposal of human urine and feces. They are often found in a small room referred to as a toilet, bathroom or lavatory. A toilet can be designed for people who prefer to sit (by using a toilet pedestal) or for people who prefer to squat and use a squat toilet. Flush toilets, which are common in many parts of the world (particularly in more affluent countries or regions), may be connected to a septic tank or - more commonly in urban areas - via a sewer to a sewage treatment plant.