Some Rust on Front Floor Panels

So,over the years, the person who had the car before me neglected to change the wiper arm gaskets and the water leaked through and has caused some rust on the front floor panels. The rust hasn't gone all the way through and isn't really heavy. I need some recommendations on what to use to remove the rust. The floors don't need to be changed, I just need to fix it.

I've attached some pics. Any advice would be helpful. Thanks in advance.

PETE

:help: :help: :help: :help: :help: :help: :help: :help: :help: :help: :help: