Please provide an option to auto delete files from the backup.

This software works great for instantly creating a backup of any file, but if you move a file or create a file and then delete it shortly thereafter, more and more copies are being added to the backup, and none are being removed, which then fills up your backup drive, forcing you to either delete the entire backup and start with a fresh one, or manually deleting the files from the backup. Please, please give us this option. Thank you.