I am battling ants on my front porch. So far, here are the natural remedies I've read about: 1) corn meal (it explodes the ants- if they don't just love it and eat it like a snack), 2) cinnamon- they can't stand the smell and as an added bonus- it will make your apt. smell nice. Sprinkle around the window sills and at the base of outside doors. 3) white vinegar: mix half and half with water and spray. Disrupts their scent trails. You may have to use more than once. 4) soapy water, like Ivory or Dawn mixed with water. Again, it disrupts their scent trails and yes, you may have to use it more than once. 5) and finally, the obvious: make sure your apt. is scrupulously clean- don't ever leave food crumbs on the counter or food unwrapped.
Good luck! I'm with you in spirit! lol