Cleaning archives from old backups, etc. can be done using the standard forfiles utility. For automation, it is better to set the call in the task scheduler.
forfiles /p "C:\my_arch\" /m *.* /s /d -10 /c "cmd /c del @path /q"
/p - path to directory
/m - search mask, instead of any files, you can specify a specific extension, for example *.db
/s - process subdirectories
/d -10 - delete files with modification date older than 10 days
/q - quiet mode, without confirmation of actions
The utility is present in the system since Windows 7
