We had a bad invasion of flying ants. Someone said, Are you sure they aren't termites? Yeah, I was, because they also invaded the parking lot where I worked, and we had to wash the car off when I got home before I could get out. I sprayed steadily daily for two weeks before i got the best of them. With the dogs, we can't put Ambro out in the yard, but we pour boiling water on the hills, and it kills them. Sprinkle talc where you see them inside...they hate it.