All i've seen around is scripts that are made for the old Database based on 97 gs, so here you go,
THIS SCRIPT IS FOR GS 99.88/99.96/1.00.08/1.00.16/1.00.18, which contains a proper length of items for a checkup, and unlike other scripts it does not ban anyone but instead, deletes the actual dupes from ppl ;)
Q: This script delete the dupe items ?
A: OMFG! Yes, the ones duped through vault-inventory method!
Q: What muserver does it support?
A: Any muserver based on 99.88 or higher, meaning Season 1, Season 2, Season 3
Q: Does it work on 1.00.16 ?
A: YES!
Q: Does it work on Endi or luciano server?
A: YES, for god sake, the gs version is above 99.88 !!!
Q: How do i know which items got deleted?
A: Simple, check CopyLog table in MuOnline DB, you will see something like that: