poudriere and deleting orphaned files

From: Gerard E. Seibert <jerry_at_seibercom.net>
Date: Fri, 05 Jan 2024 17:53:44 UTC
I want to delete orphaned ports. I found this supposed solution for
poudreiere: poudriere ports -u -p <your-ports-tree> -d -O

Poudriere apparently does not have a "-O" option. Poudriere bombs out
when I attempt to use it as shown above.

Does poudriere have a method to remove orphaned ports?

Thanks!