Thanks NERGAL but the point I make, is that I use CCleaner, to destroy files, then use Rucuva to check if the job was done.
Recuva finds files that can easily be deleted. So if I can find them with Recuva, anyone can.
So CCleaner is ineffective.
Likewise, Recuva purports to be able to completely wipe files it recovers. It doesn't.
So Recuva is also ineffective.
I will be very happy to be proven wrong.