These standard-sized construction portable toilets have a foot pump mechanism to enable flushing in the unit. This cuts down on odor issues and makes the unit function more like a permanent, interior toilet. An internal tank in the flushable construction porta potty contains waste water. Unlike standard chemical toilets, the waste tank is hidden rather than open and visible at the bottom of the toilet. These flushing units do not have a sink but there is space for a hand sanitizer dispenser. Your flushable construction porta potty rental may be combined with external hand washing stations for a more sanitary experience.