Alas, as advanced as macOS 10.12 Sierra is, it can’t haul your garbage can out to the curb. But if you choose Finder > Preferences > Advanced and select “Remove items from the Trash after 30 days,” it will automatically trim the contents of the Mac’s Trash regularly to ensure that you aren’t wasting space on your drive with gigabytes of files that you trashed months ago. Once selected, deleted files will sit in the Trash for a month, after which Sierra will silently remove them.
