The most common and most likely answer to this crossword clue is the 6 letter word WRECKS
I've seen this crossword clue in The Guardian
W
R
E
C
K
S
Buddy explains!
The straight part
We know that "spoils" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case spoils = wrecks.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does WRECKS mean?
WRECKS noun- Something or someone that has been ruined.
- The remains of something that has been severely damaged or worn down.
- An event in which something is damaged through collision.
- Goods, etc. cast ashore by the sea after a shipwreck.
- To destroy violently; to cause severe damage to something, to a point where it no longer works, or is useless.
- To ruin or dilapidate.
- To dismantle wrecked vehicles or other objects, to reclaim any useful parts.
- To involve in a wreck; hence, to cause to suffer ruin; to balk of success, and bring disaster on.