J.T.
Those black sugar ants are a HUGE problem in this area. A fantastic solution that you can do yourself is Aspartame-you know, Equal or another name, Nutrasweet. Sprinkle it in the corners in the rooms you are having trouble in, preferably on a window sill. Wet it just a little and you'll see that in a few days the problem will be taken care of. The way it works is that it is a neurotoxin and when brought back to the mound it creates confusion and then their whole ecosystem is brought to a screeching halt, killing them. Nutrasweet may be found in over 6000 products from soda to even supplements, but it's hardly truly safe for human or even ant consumption! Try it!