Abstract: The present invention can be characterized as a tamper proof apparatus for dispensing a selected liquid such as a cleaning product in a environment where protection against abuse and vandalism is desired. The tamper proof apparatus includes a cabinet enclosure having an open front for accessing interior components; a hinged faceplate covering the open front of the cabinet enclosure; a mixing unit fastened to an inside surface of the hinged faceplate for dispensing the selected liquid; a filling recess formed in the hinged faceplate for limiting a dimension of a container placed inside the filling recess; a filling nozzle coupled to the mixing unit for dispensing the selected liquid into the container placed inside the filling recess; a pushbutton coupled to the mixing unit through the hinged faceplate for causing the selected liquid to be dispensed through the filling nozzle; and a locking plate that may be detachably coupled to the hinged faceplate for restricting access to the pushbutton individually.