Do you still need Ccleaner if you have Firefox set to "clear personal data" everytime you close Firefox?

Question:Basically my question is if you set your Firefox settings to delete all your personal history everytime you close firefox is that the same thing that ccleaner would do? If not please tell me what else Ccleaner can do that firefox cant already do. Thanks a lot

Answers:
I always use it even though I have FF delete on exit. I think it finds more temp files than FF knows about and FF seems to finish too quickly.

Try running CC today, delete everything and check again in a week. If it finds more, you'll have your answer.