Schematic of a<unk> : Left a squat toilet, right a pedestal type toilet. A<unk>  (or non-flush toilet, no flush toilet or toilet without a flush) is a toilet that operates without flush water, unlike a flush toilet. The<unk>  may have a raised pedestal on which the user can sit, or a squat pan over which the user squats in the case of a squat toilet. In both cases, the excreta (both urine and feces) falls through a drop hole. The urine and feces can either become mixed at the point of dropping or stay separated, which is called urine diversion.<unk> s do not produce sewage. Many types of toilets without a water seal (also called<unk> s or "non-flush toilets") exist. These types of toilets do not use water as an odor seal or to move excreta along. For example, from simple to more complex: a bucket toilet (honey bucket), a tree bog or arborloo (two simple systems for converting excrement to direct fertiliser for trees), a pit latrine (a deep hole in the ground; but not those that operate on a "pour flush" basis), a vault toilet (which keeps all the waste underground until it is pumped out), a container-based toilet, a composting toilet (which mixes excreta with carbon-rich materials for faster decomposition), a urine-diverting<unk>  (which keeps urine separate from feces), and incinerating and freezing toilets.
Dry toilet
Composting toilet
Tao brush
Oral hygiene
Urine-diverting dry toilet
Suction 
Suction
Boil-water advisory