Pavement Ants, shown right, are the ants that nest in and under cracks in the pavement or under stones around homes and buildings. Dark brown or blackish in color, these ants have large colonies with an average of 4,000 worker ants with queens. These ants will eat almost anything, crumbs around the house, fruit, nuts, other insects, meats, etc. They can climb up walls and enter building through cracks and small openings. They can bite or sting, and contaminate food if they get in it.
Sugar Ants is actually a general term for ants, and not an actual specie of ants. It is a name given to ants which tend to like sweet food. This sugar ant, could actually be a crazy ant, pharaoh ant, ghost ant, odorous ant or other species. Odorous house ants, shown to the right, walk in a line, while crazy ants are named for their sporadic turning behavior when they are around food sources. Pharoah ants are one of the common ants found in the kitchen. They eat most things, but are attracted to protein. Ghost ants are tiny brownish ants that tend to cluster on counter tops in search for food.
Repellants may kill ants in one spot but deter them from that area, so the rest of the ant colony is still alive and simply goes somewhere else but remains in the house. Quick pesticides may not kill the entire colony either. A slow acting bait can be used to kill ants slowly. The ants bring the bait back to the rest of the colony, killing off the entire colony.