Don’t leave any energy drink bottles behind for all to see (3,2)
I believe the answer is:
use up
'don't leave any' is the definition.
I can't judge whether this defines the answer.
'energy drink bottles behind for all to see' is the wordplay.
'energy' becomes 'e' (physics symbol as in E=mcu).
'drink' becomes 'sup' (to sup is to drink).
'bottles' is an insertion indicator (to bottle can mean to contain).
'behind' says to put letters next to each other.
'for all to see' becomes 'u' (short for Universal film certificate).
'e' put into 'sup' is 'seup'.
'seup' after 'u' is 'USE UP'.
Can you help me to learn more?
(Other definitions for use up that I've seen before include "Consume (stocks)" , "Exhaust (resources)" , "Completely consume" , "Entirely consume" , "Finish, exhaust" .)