http://news.yahoo.com/s/nm/20090303/hl_nm/us_salmonella_usa

That's right, the plant responsible for the salmonella outbreak had some mice in it.  How many?  Don't ask me, I don't know.  All I know is that they must've cut back in the mousetrap department.  And before anybody says anything, while I would say that poison might work, I dunno if it's worth risking one of the bastards dying in a vat of butter.  But again, as a disclaimer, I've never worked in a food processing plant, so YMMV.  And if I came off as rough, I'm sorry, just venting a bit.