Deleting a subfolder after using

Hi, I'm pretty new with this program and have a question about a task I need to do.
I have my downloads folder set up so that any rar files that enter it are unrared and then the contents of the folder which has been unrared is sent to itunes. This isn't a problem, however, it leaves the folder which I have taken the music from empty other than a .jpg of the album artwork and some web link. Is there a way I can get hazel to automatically delete this? Bearing in mind that the downloads folder may have folders in which I don't want to be deleted as they contain non-music files.
Thanks in advance!
I have my downloads folder set up so that any rar files that enter it are unrared and then the contents of the folder which has been unrared is sent to itunes. This isn't a problem, however, it leaves the folder which I have taken the music from empty other than a .jpg of the album artwork and some web link. Is there a way I can get hazel to automatically delete this? Bearing in mind that the downloads folder may have folders in which I don't want to be deleted as they contain non-music files.
Thanks in advance!