Database Cleanup plugin scans the database and shows the tables beyond of core WordPress installation. Some WordPress plugins create and use its own database tables.
Those tables are left in your database after plugin deactivation and deletion often.
With the help of this plugin you can check your database and discover if it is clean or not.
Extra columns added to the core WordPress tables could be shown also.
To read more about ‘Plugins Garbage Collector’ visit this link at shinephp.com
Additional Documentation
You can find more information about “Plugins Garbage Collector” plugin at this page
http://www.shinephp.com/plugins-garbage-collector-wordpress-plugin/
I am ready to answer on your questions about this plugin usage. Use plugin page comments or site contact form for that please.
Screenshots
screenshot-1.png Plugins Garbage Collector scan action results.