Is Piriform CCleaner good to have?

Hello experts,
I installed CCleaner but uninstalled it again because after the installation I got some toolbars and it seems that my anti malware software got hundred items when I downloaded YouTube Downloader. And maybe that is the reason why I have some icons on my computer which I did not actually installed. I want to know if its safe to download CCleaner and install it again on my computer?
