@geauxk Well, it has it's own duplicate finder, but I actually get rid of mine another way.
It can generate it's own scene cover for every file, so I tend to just pull up a page with 1000 files on it, sorted by duration and then I just scroll through looking for adjacent scenes with the same cover. You can also do it by sorting by phash, but for some reason that doesn't seem to work as well. Any, I just select any dupes and mass-delete them.