Little remains of reforms to ban pesticides (4,3,6)
I believe the answer is:
bits and pieces
'little remains' is the definition.
I know nothing about this answer so I cannot judge whether this works.
'reforms to ban pesticides' is the wordplay.
'reforms' is an anagram indicator.
'ban'+'pesticides'='banpesticides'
'banpesticides' is an anagram of 'BITS AND PIECES'.
'of' is the link.
Can you help me to learn more?
(Other definitions for bits and pieces that I've seen before include "Miscellaneous items" , "Small" , "Odd items" , "miscellanea" , "Odds and ends" .)