Your Mac has been doing this wrong the whole time!
Make macOS automatically move zip files to the trash after expanding them. This simple Archive Utility setting saves you from manual cleanup.
That leftover zip file after you unzip something? You don't have to delete it manually.
Fix it once:
Spotlight → "Archive Utility" Menu bar → Archive Utility → Settings Select Move archive to trash
Now zips vanish automatically after unzipping.
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