I thought I had found some hog food that the cats didn’t like, but it seems there is always one! The thing that has worked best to keep the cats away is the see through perspex type set up which I explained a few posts back. It has the advantage, if you have limited space that you can easily move it out of the way for day time.
Now, whilst the cats still pay fleeting visits, they seem to think it’s too much trouble trying to creep under the sheeting. I have it close to a hog feeding box, which I have finally persuaded the current hog visitor to go into, and the perspex prevents the cats from getting into the box as well. The current hog visitor can just squeeze in – so the cat food goes in there. Previously, I found that a cat could get in, despite making the doorway very small.
Good luck – hope you find a solution that works for you.