public void Main()
{
    try
    {
        ProcessDirectory(Dts.Variables["OuterDirectoryYYYYMMM"].Value.ToString());
        Dts.TaskResult = (int)ScriptResults.Success;
    }
    catch (Exception ex)
    {
        Dts.TaskResult = (int)ScriptResults.Failure;
    }
}
 
private static void ProcessDirectory(string startLocation)
{
    foreach (var directory in Directory.GetDirectories(startLocation))
    {
        ProcessDirectory(directory);
        if (Directory.GetFiles(directory).Length == 0 && Directory.GetDirectories(directory).Length == 0)
        {
            Directory.Delete(directory, false);
        }
    }
}

@echo off
 
for /f "delims=" %%a in ('wmic OS Get localdatetime ^| find "."') do set dt=%%a
set year=%dt:~0,4%
set month=%dt:~4,2%
if %month%==01 set month=Jan
if %month%==02 set month=Feb
if %month%==03 set month=Mar
if %month%==04 set month=Apr
if %month%==05 set month=May
if %month%==06 set month=Jun
if %month%==07 set month=Jul
if %month%==08 set month=Aug
if %month%==09 set month=Sep
if %month%==10 set month=Oct
if %month%==11 set month=Nov
if %month%==12 set month=Dec
set filePath=\\fileserver\Dir1\%year%\%month%\
 
"C:\Program Files (x86)\WinSCP\WinSCP.exe" /console /script=FTPScript.txt /parameter %filePath% /log=FTPlog.txt 
exit

option confirm off
option batch on
open sftp://UID:PWORD@SomeHost.com/ -hostkey="Some Host Key" 
rm *<14D
get -preservetime -filemask="*>=1D" / %1% 
exit