K.A.
If you want a non-chemical based way to do it... if you can find where exactly they are entering the house, block the entrance with baby powder. I lived in Las Vegas for several years and they would come in looking for water. I woke up several mornings with my entire hallway floor and kitchen COVERED in ants (it was the most disgusting thing I have ever seen) and the second I found their entrance and blocked it with baby powder... I never had a single issue with ants again. I don't know why this works, but it was amazing!