Some really powerful logic in here if you use #GTM: The Art of the Double Negative – Using Trigger Exceptions in GTM http://www.lunametrics.com/blog/2015/07/22/double-negative-trigger-exceptions-in-gtm/
Source
https://twitter.com/danielmcclure/status/700736910432538624
https://twitter.com/danielmcclure/status/700736910432538624