couple of other threads suggest cures:
http://www.quiltingboard.com/t-47238-1.htm
http://www.quiltingboard.com/t-57277-1.htm
**from here Ditter43 suggested:
his homemade treatment has worked very well on both carpenter ants and pharaoh ants.
Ingredients:
1 Tablespoon of Boric Acid, 1 tsp of Sugar, 4 oz water, Cotton Balls.
Mix Boric Acid and Sugar in a bowl. This can be poured over a cotton wad in a small dish or bottle cap. Keep this from drying out for continued effectiveness. Place Cotton balls in path of Ants.