This script deletes all files and folders older than 15 days fron an specific destination folder.

cleanupFiles.bat

@echo off
:: set folder path
set dump_path=E:\musan\Downloads\Contenedor

:: set min age of files and folders to delete
set max_days=15

:: remove files from %dump_path%
forfiles -p %dump_path% -m *.* -d -%max_days% -c "cmd  /c del /q @path"

:: remove sub directories from %dump_path%
forfiles -p %dump_path% -d -%max_days% -c "cmd /c IF @isdir == TRUE rd /S /Q @path"