Automating transfer

Our clients upload order files to our remote SFTP server. I am looking for a way to automate downloading these files from the remote server without user input. Can I set a recurring or constant loop that will look for any files that are uploaded to the remote server and transfer them to our local folder in the background continuously?

For a complex solution (which can be used separately or from WinSCP GUI), see:
https://winscp.net/eng/docs/library_example_keep_local_directory_up_to_date

Or just write a simple download script and loop it in a batch file:
https://stackoverflow.com/q/16239371/850848#16274783

Or schedule it frequently:
https://winscp.net/eng/docs/guide_schedule