My 3rd cleaner is not well known I don't believe Rod. I bought a license for it years ago. Think you can try it for free, I'm not sure.
It seems to find junk files in my windows, that CCleaner and Wise Cleaner never find. Its called Ace Utilities .
I completely removed anything to do with Norton years ago myself. Don't trust Norton at all. Also think it slows down your PC too. I'll never install Norton again. Sorry. Its also very hard to remove every piece of Norton's too, as it gets embedded in you pc very deeply. IE: the registry .... It can be done thou. Also takes up a lot of your hard drive space the longer you run it, the more space it will use. To completely remove it from your registry will also take a Real Good Registry cleaner.
Here is a link to Ace Utilities
Home of Ace Utilities - the best system cleanup, maintenance and optimization tool
acelogix.com