Fslogix - Deleting user documents from the document/image/download directories

hello, 

I have a Terminal infrastructure with 10 servers acting as RDS (Windows Server 2022, fslogix version 2.9.8884.27471). Users mount the .vhdx profile that resides on a dedicated server. To limit the size of the profiles, I need the contents of the desktop/Pictures/Documents/Downloads to be deleted upon logout or login.
I tried creating a logoff and login policy, but it doesn't work. Users simply log out, so from what I've read, the policy isn't applied. I opted for redirection fodder, but here too, I'm having some difficulty applying the policy, which isn't actually inherited. I linked it to a test OU containing a test user, so it's quite limited. What would be the best solution for managing file cleanup?

Thank you