Cleanser target (4)
I believe the answer is:
dirt
'cleanser target' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for dirt that I've seen before include "Earth; grime" , "scandalous gossip" , "Grime - scandal" , "Loose soil; filth" , "'Mud, dust or grime (4)'" .)