Using a concept from a children's book, my husband built me a table with legs that were pressure treated so they won't rot in the water. This is an ecologically-balanced approach to getting rid of the ant problem. The containers are filled with water and the ants can't swim. I looked closely last night and could not find one ant on the hive. If you look closely you can see salt sprinkled around the hive, which did not get rid of the ants.
How to Organically Get Rid of Ants From Your Bee Hive!