some info
The default action for PUP detections is 'Show in results list and do not check for removal."
https://helpdesk.malwarebytes.org/entries/23482988-What-are-the-PUP-detections-are-they-threats-and-should-they-be-deleted-
http://blog.malwarebytes.org/news/2013/09/selecting-all-pups/
http://blog.malwarebytes.org/news/2013/07/malwarebytes-adopts-aggressive-pup-policy/

this may save you from some of them installing. Unchecky http://unchecky.com