I can't check with mine as it doesn't even list my floppy drive I just realised, it hasn't been used in years.
If you can read and write to them, you can just delete the contents, all floppy disks come preformatted, so there should be no need to format them.
With 4GB usb sticks being dirt cheap, why mess with floppies. I suspect a new box of foppies probably costs more then a 4GB usb stick and only holds 13.8MB.