Spam IDs & their spam threads - how to delete altogether?

[Ra]

Having 500 spambots registered - how to delete them all via administrative panel?
I currently have to delete them one by one - that means reloaded page every time and searches again. After an hour of such a battle I defeat.
How to mark all the spambots in the ID list and delete them in one step?

(plus "last message preview" near the ID would have been much helpful to understand it's a friend or foe)

 

[Jake Bunce]

http://xenforo.com/community/resources/dealing-with-forum-spam.980/

The Manual Cleanup section has some tips, depending on the situation. 4 and 5 might be useful.