Being new to this "game" we put in a DNF log when we and another geocacher we didn't know couldn't find a cache. We got a reply from another cacher who did find it later that day and he tried to tell us how to work the GPS. So... if I knew how, or wanted to take the time, I would delete the log. In the future we won't be putting in any other DNF. (I've used a GPS in Oregon, I know what REAL timbers look like.)