Lots of dogs pee in the auditorium unobserved (6)
I believe the answer is:
oodles
'lots of' is the definition.
(I've seen this before)
I can't explain the rest of the clue.
(Other definitions for oodles that I've seen before include "wealth" , "A great many" , "Very great amount (colloq.)" , "Plenty" , "Informally, great quantities" .)