I think I sorted out my rat problem, purely by mistake and a lot of stupidity.
There was a rat in the feeding station, and, I don’t know what I was thinking of, but the brick on top of the FS, well I picked it up to tap the roof of the FS with it, as i thought that would scare it off. It sure did scare it off, but I also smashed the lid of the FS which I had to replace. But at least the rat didn’t come back. For that night, i had to get some gorilla tape out and tape the smashed bits, to ensure the hogs got some dinner. Luckily it came off in big pieces so I could fit it together.
The idiot that I am, fancy using a brick to hit a plastic roof! Doh