Ants are the 3rd pest problem in the country. Ant control can be difficult, but there are some things you should know about how ants’ behavior can lead to big headaches for you and your home.

Pavement Ant: Facts, Identification & Control

Argentine Ant


Pavement Ant

Tetramorium caespitum


Pavement ants are reddish brown to black; workers are about 1/8 inch long. Pavement ants have the following characteristics:
1) petiole with two nodes,
2) head with furrows (lines) running vertically (top to bottom), and
3) a pair of spines on the posterior portion of the thorax [compare with acrobat ants].


Variety of foods including meats, pet food, sweets, bread, nuts, and insects.


Visibility - seen entering houses looking for food, most often at night. May move through pipes and electrical wires.

Nesting Sites

Nesting Sites: In soil under sidewalks, driveways, stones, logs and other concealed sites. Also commonly found under homes with concrete slab construction; ants enter homes through cracks in the concrete.

Mating Swarms:

Mating Swarms: May through July. When the nest is under a heated slab foundation, swarms can also occur indoors during winter.

Pest control:

Management: Look for and treat outdoor nests. When the nest is not found, treat the building perimeter with a residual spray. When pavement ants are nesting under heated concrete slabs, baiting is the most effective control tactic. Use commercially available baits effective against grease-feeding ants.

As pests:

These black pavement ants do not pose a public health risk, but they can contaminate food and should be avoided.

Pest control:

Control involves application of insecticides in various forms including dusts and liquids. The dusts are injected directly into galleries and voids where the ants are living.
The liquids are applied in areas where foraging ants are likely to pick the material up and spread the poison to the colony upon returning.

Argentine ants