Rules for Unregistered / Bots

I'm having a mental block again.. (must be because of the heat)

The default Rules system in vBulletin...if I enable it for just Unregistered users , do the Bots see it as well ?

I'd like to have a default message on all my forum pages....something like "Members logged in do not see any Ads". But I don't want the search engine bots to see it.

any tips ?

Bots are guests.

Showing different items to human guests vs bot guests is considered cloaking and should never be done.

I really wouldn't worry about a bot seeing the above string.