Free vs Pro: Cleans Everywhere?

On the description page illustrating the differences between the 3 versions of CCleaner, the paid versions are listed with a feature that "Cleans Everywhere Even places other cleaners can't reach."

What exactly do the paid versions clean further than the free version?

Good question. They may be compared to other manufacturers of software and not to the CCleaner free version. Unless CClean cleans EVERYTHING, it's useless.

It's a question that gets asked now and again.

The 'cleans everywhere' means that the pro version can clean all user accounts on a machine.

The free version (and some other programmes) can only clean the one account it is used from.