CCleaner is a freeware tool that can be used clear out temp files, cookies, history, recycle bin. In essence, it’s pretty much a tool for cleaning all the junk that piles up in your system. Over all the years I’ve been using this tool, there has been no problems. However, do make sure to create a system restore point to be on the safe side. One can also clear out old registry files from programs which should be cleaned out since it is removed from the system.
Go ahead and give it a try and see for yourself!