What is the best way to clean my mac? I have a semi-brand new macbook pro with retina display and recently it has been acting weird. I feel like I have a virus, but Avast isn't catching anything, even though firefox acts super weird and I get pop ups all the time. I feel like I got the virus from watching breaking bad on 1channel.

I have CCleaner and that seems to do a good job, however I need to do more to clean it.

Any suggestions?