General question about Recuva and deleted files

Hi everyone, I'm new to Recuva.

On the first run on a thumb drive, I was surprised that it found over 300 files from a very long time ago.  Yet there were also a couple thousand files it could not recover - they were 0 byte files.




I've used BCWipe for many years for wiping files from the thumb drive, so I was concerned that they were found.




How can I truly get rid of these files once and for all?