Rust on the frame. Is there any way to get rid of it?

Hi. I bought my expedition couple weeks ago. It's 2000 but it was driven in NH. I guess they have a lot of snow there, because frame is all rusted. Nothing serious, but looks like car was 20 years old. I live in NJ and we do not get too much snow here. I was wondering if there is any easy way to clean some of this rust. I know it may sound silly, but maybe there is something out there to do the job. Thanks for any help.

If it is just mild surface rust you can be a gel that will remove it with a shot of water from a hose. If it is so badly rusted that it is flaking I'm afraid there is nothing you can do.