Cleaning item rusted badly (6)

I believe the answer is:

duster

'cleaning item' is the definition.

'rusted badly' is the wordplay.
'badly' indicates an anagram.
'rusted' is an anagram of 'DUSTER'.

(Other definitions for duster that I've seen before include "Cloth for removing surface powder" , "Cloth for cleaning chalk from blackboard" , "cleaner" , "Polishing cloth" , "yellow cloth" .)

I've seen this clue in The Times.

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