I don't know if this will be any help at all, but I'll throw it out there.
When I lived in Florida, me and all my neighbors had an awful problem with sugar ants. I don't like using chemicals, but I tried
everything, and they continued to invade. No matter how well you seal up the food, they find a way to get into the container.
Then, a long-time resident told me to catch one of the little brown lizards that run around outside and put it in the kitchen. She said it would live behind the refrigerator and I would have no more ants. She was right! I did that, I very seldom saw the lizard, it did live behind the fridge, and I had no more ants!
I tried to tell my neighbors about that solution, and they would look at me like I was crazy. They thought a lizard was unsanitary. But one lizard on the wall is much less sanitary than thousands of ants in your food, to my way of thinking.