Real small ants are in the cat's bowl. The food is dry food, not
something that is obviously attractive to pests. A pest control guy
comes four times a year. In fact, this latest infestation occurred an
hour after the technician left.

Here's the rub: I can't see where the ants are gaining access. They
just show-up at the bowl. There's no line of ants carrying food back
to the nest, either in small cracks or toward a door. Any
explanations? Thanks.