Good sugar ant killers include Borax and boric acid, according to Enki Village. Sugar ants can also be repelled with cloves and bay leaves.
To kill sugar ants, mix Borax or boric acid with sugar, mint jelly, maple syrup, honey or peanut butter. Borax is poisonous to ants and non-toxic to humans. The ants will carry this mixture back to their colony, effectively killing the ants.
The boric acid mix can also be used in an ant trap made from a box with pinholes, says Pest Kill. It is best to set this up at night, when ants actively hunt for food.