It is the stage in which one modify his or her behavior, experiences, or environment in order to overcome their problems. Action involves the most overt behavioral changes and requires considerable commitment of time and energy." During the action stage, one implements the plans developed and information gathered in the preparation stage.
Washing would only transfer the waste somewhere else, it wouldn't actually "clean". processing it could be used to make bio gas. that bio gas can be used as fuel. or it can be used to make manure.