#1 Make an empty folder in your, in my case, google drive.
#2 Use “Local Selective Sync”, then “Sync under a folder” to sync the contents of folders to the cloud under the newly created empty folder.
#3 You now have a folder that, when looked at through windows explorer, looks empty, but if deleted will delete all the folders synced through it from your local machine and the cloud.
To make it even better, if you catch Isync deleting your files, making it stop is surprisingly difficult as you no longer have to folder to tell it to stop syncing.