Cleaner put off fellow (9)

I believe the answer is:

detergent

'cleaner' is the definition.
(detergent is a kind of cleaner)

'put off fellow' is the wordplay.
'put off' becomes 'deter' (I've seen this before).
'fellow' becomes 'gent' ('gent' can be a synonym of 'fellow').
'deter'+'gent'='DETERGENT'

(Other definitions for detergent that I've seen before include "cleaner" , "Cleansing solvent" , "Soapless cleanser" , "Soluble cleanser" , "help with the washing-up" .)

I've seen this clue in The Telegraph.

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