Something to clean up, in fact? (3)
I believe the answer is:
act
'fact?' is the definition.
(thesaurus)
I don't understand the remainder of the clue.
Can you help me to learn more?
(Other definitions for act that I've seen before include "Bill successfully prosecuted" , "Accomplishment" , "Function" , "Aussie parliamentarians exert influence here?" , "Take part in a play" .)