To remove all the spammers' posts and comments from the Experience Cloud site, DR should utilize the Insights reports by creating and using a custom action to remove them. Insights reports are reports that show the activity and engagement metrics on DR's site, such as page views, likes, comments, flags, and moderation actions. DR can use Insights reports to identify the spammers' posts and comments based on the flagging reasons or other criteria. DR can also create a custom action that allows DR to remove multiple posts or comments at once from the Insights reports.