Comes clean with commercial mist spray (6)
I believe the answer is:
admits
'comes clean' is the definition.
I can't judge whether this definition defines the answer.
'with commercial mist spray' is the wordplay.
'with' means one lot of letters goes inside another.
'commercial' becomes 'ad' (abbreviation for advertisement).
'spray' indicates an anagram (I've seen 'sprayed' mean this (I've seen this in other clues)).
'mist' anagrammed gives 'mits'.
'ad' put inside 'mits' is 'ADMITS'.
Can you help me to learn more?
(Other definitions for admits that I've seen before include "Allows in or accepts guilt" , "Takes in" , "Lets in and confesses" , "Agrees to the truth of something" , "Owns up or lets in" .)