Cleaner put off by man (9)
I believe the answer is:
detergent
'cleaner' is the definition.
(chemical that cleans)
'put off by man' is the wordplay.
'put off' becomes 'deter' (both can mean to discourage).
'by' means one lot of letters go next to another.
'man' becomes 'gent' (gent is a kind of man).
'deter'+'gent'='DETERGENT'
(Other definitions for detergent that I've seen before include "Cleaning product" , "Cleansing substance used for washing clothes" , "Cleansing solvent" , "Soluble cleanser" , "help with the washing-up" .)