Never mind - the pests are inside (6)
I believe the answer is:
vermin
'never mind the pests are inside' is the definition.
I can't judge whether this defines the answer.
'never mind the pests are inside' is the wordplay.
'are inside' says the answer is hidden in the clue.
'VERMIN' is hidden within 'never mind pests'.
Can you help me to learn more?
(Other definitions for vermin that I've seen before include "despicable people!" , "Common animals and birds, like rats and crows" , "eg Rats" , "Pestilent creatures" , "Harmful or disease-ridden animals" .)