Reply #23: I would go with the idea of the baby gate and also

[calico1]

I find most dogs can't figure out how to get past any barrier that is put in the way such as a box, a small table, etc. I keep my dog away from the cat food by arranging chairs, stools and other things near their food bowls. She is a big dog but it still might be worth a try with yours. Even though my dog could get through she gets all confused by the objects in the way. Give it a try.