Filthy dog evacuated stinky kennels (6)
I believe the answer is:
smutty
'filthy' is the definition.
(I know that filthy can be written as smutty)
'dog evacuated stinky kennels' is the wordplay.
I cannot quite see how this works, but
'dog' could be 'mutt' (mutt is a kind of dog) and 'mutt' is located in the answer.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for smutty that I've seen before include "Blue" , "Rather rude" , "Filthy" , "Dirty" , "Rather indecent" .)