Crossword Genius

Cleaners appear to put fellows off (10)

Ross

I believe the answer is:

detergents

I'm a little stuck... Click here to teach me more about this clue!

'cleaners' is the definition.
(I know this)

'appear to put fellows off' is the wordplay.
I cannot really see how this works, but
'fellows' could be 'gents' ('gent' can be a synonym of 'fellow') and 'gents' is located in the answer.
The remaining letters 'deter' is a valid word which might be clued in a way I don't see.
This may be the basis of the clue (or it may be nonsense).

Can you help me to learn more?

I've seen this clue in The Globe and Mail.
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