sugar ant is a term used to describe a variety of ant species that seek out sweets in your home. In the United States and Canada, the term “sugar ant” is used to describe any sweet-eating ant that invades your home 0r commercial .Getting rid of sugar ants is never a simple proposition, despite their simple nature. Sugar Ants are probably the most simple-minded ant species. What do they eat? They eat sugar, sweets, and other scraps of food. This is why we call them sugar ants. Of course, the term sugar ant is actually a misnomer.