Spam Spam Spam!

I keep getting spam and more spam, very explicit and ugly stuff for a Chihuahua website! I delete as much as I can but it keeps coming and coming. I have the human verification as well as the newest update version. They arent posting the entries now, but commenting on the entries already there. Help please! Also, some of them I cannot delete as the entries have photos and its far to the right and there is no edit/delete button !

1 - Update to either 2.4.1 or Lazarus.
2 - Delete the entries via phpMyAdmin

I have 2.4.1 version already installed. Is there nothing else I can do? Its every day hundreds of them and its driving me crazy! Very explicit content. Help!

Is it possible to update to Lazarus without losing all my entries currently there?

1 - If you are on 2.4.1 go into config.inc.php and set captcha to true

2 - Lazarus is based upon AG and as such keeps your entries.