Garden salad

I'm not getting as much produce out of my garden as I hoped. But the cucumbers are still growing and I'm getting enough cherry tomatos for a small salad each evening.

I had a run-in with red ants yesterday. They appear to be living under the stepping stones next to my raised garden bed... I'm still trying to figure out how to get rid of them, I'd like an organic solution. Limestone, which is supposed to work like diatomaceous earth doesn't seem to have an effect.