Conveyor dishwasher with special treatment zones

The invention relates to a device for cleaning of cleaning (120), in particular a conveyor-type dishwasher (112). This comprises a plurality of treatment zones (132, 142, 149, 150, 160, 200) for the material to be cleaned (120) continuously or intermittently through the treatment zones (132, 142, 149, 150, 160, 200) is transported. The treatment zones (132, 142, 149, 150, 160, 200) comprise at least one special treatment zone (200), depending on the degree of contamination of the cleaning stock (120) is activated.