Can C-Cleaner clean a flash drive?

CCleaner for Windows
1

Hi all: I registered in order to ask this question after reading quite a bit and not finding my answer. Hoping someone can help:

I have a flash drive on which I use Portable Firefox. I "clear private data" frequently on Firefox, but would like to have some secure file deletion. (I use NSA on my home computer). Just like the peace of mind.

Can C-Cleaner clean a flash drive? If so, how would I go about it?

Thank you. And apologies if this has been addressed.

2

No. CCleaner only operates on the system c drive. You can delete stuff from the flash drive, then scan with Recuva and secure overwrite what you find if you wish, but it is a little fiddly.