Hi lads, just a bit confused on wording; tooltip says "include" box says "exclude"

http://i.imgur.com/LIWbSQ5.png

By adding things in here; am I including them to be cleaned or excluding them to be cleaned?

Hmm, but what is already included then and what is there to exclude?
Surely it'd be "Include" due to the way it lists some examples of ammo boxes? I'd assume objects like that wouldn't auto clean.