I was having problems with some files remaining after I clicked Run Cleaner. I would click Analyze again, then click Run Cleaner and the same file or files were still on the list.
I finally figured out through Trial & Error, that if I clicked Run Cleaner again it deleted more files. I clicked Run Cleaner again and more files appeared on the list showing which files I deleted that time.
Now I click Analyze once and Run Cleaner until it shows "0 bytes removed".