The Little Black Ant, not surprisingly, is a very small, black ant. This ant has two nodes on the forefront of the abdomen and the workers are all one size. The antenna has twelve segments and ends in a three-segmented club.
Even if your kitchen is spotless, little black ants can and will invade your home in search of food. Don't give them the satisfaction of finding unsafeguarded food. Store everything in tight containers, preferably plastic containers with snappy lids, tin/aluminum canisters, or jars with rubber gaskets. This includes, but is not limited to, flours, sugars, pastas, cereals, chips, butter, and oils. Basically assume that if it's something you can eat that the ants would also like to eat it.