Yesterday I discovered part of my jasmine had been stripped of leaves and I knew the
leafcutter ants had returned. So, last night we went out with the flashlight and found them. They had also moved across the yard to a basket that was full of stuff I'd trimmed from the garden and they were cutting that up and hauling it away as well. That would be fine if they weren't also back to removing all the leaves from the jasmine. We put out bait and they eagerly started hauling that home too. It usually takes a few days and several additions of bait before they disappear. The bait poisons the fungus they grow in their nest for food, the colony dies when the fungus dies. This group were coming from an empty house that backs onto my garden. They can strip my entire garden in a few nights if I don't spot them soon enough. I've even had them go out into the pond on the lily pads and eat their way back to the edge.
See the bare stems at the top of the photo? A few more days and my entire garden would look like that.