The operating instructions are clearly formulated; the markings on the nasal rinse themselves are unique. Only a few steps are necessary and you're ready to go. If it is claimed in other Rezenzionen, one must apply a lot of pressure, it may be because that the mechanism for opening / closing was not opened wide enough. The flushing process itself is relatively pleasant .The cleaning is straightforward because it is possible that nasal irrigation disassemble in all wesendlichen parts.