This infusion enables you to purge out users who never contributed with anything on your site.
Based on an entered date, you may purge users who did not login after the entered date.

1. Copy all files from the folder "The infusion" to the root on your server.
2. Aktivate the infusion "del_old_users" under Administration -> System settings -> Infusions
3. The Infusion is ready to use under "Infusions".