Hey buginthebox,
Those are good suggestions for later in the season. What you want to do is give the ants what they need. At this point in the season, the ants need both water and an energy source like sugar. Give them both. Try to find a bait formulation called "Terro". I can usually find it in grocrey as well as hardware-type stores. It is a thick "goo" in consistency and most species of ants will inhale it fast. Follow the directions to the letter and it works great.
Try to find how the ants are entering your home from the outside. See if you can find a trail of ants entering via a crack or other opening. If you can find an entry point, seal it off with clear silicone caulk. That way you keep the ants from returning.
Bait stations like Rick mentioned work well when the colony needs protien for egg production. In Kansas, that won't be until next month.
By the way, I spent many years as a branch entomologist for Terminix and specialized in eliminating ants. Any chance you could send me some of the workers in a vial of alcohol? Or possibly post a few close up photos? A good identification may help you to eliminate them with the least amount of effort.