Purging old Packages

I am building packages via TeamCity and publishing the Packages to the Proget Server after they are built. I am creating the packages versioned with the Build Number as part of the package version. I am compiling a huge number of old packages in ProGet and would like a quick way to purge the old packages programatically. Any suggestions? I'm thinking a Powershell Script is needed but would like a better way if possible.

This is something we're thinking of adding eventually (i.e. Retention Policy), but for the time being, you can delete the packages from disk via PowerShell if you're comfortable with writing a script like that. We'll try to get this feature into the next version.