Global identification & prevention guideAnts
Formicidae
From pavement ants to carpenter ants, identify ant species and locate nests at their source.
Overview
Ants are social insects belonging to the family Formicidae. There are more than 12,000 known species worldwide. They form colonies ranging from a few dozen to millions of individuals. Common household species include carpenter ants, fire ants, odorous house ants, and pavement ants.
Identification
Body divided into three segments: head, thorax, and abdomen with a narrow waist
Six legs and elbowed antennae
Carpenter ants: large (6 to 13 mm), black or dark brown
Fire ants: reddish-brown, 1.5 to 5 mm, build soil mounds
Odorous house ants: small (2.5 to 3 mm), dark brown, emit coconut odor when crushed
Behavior & Habitat
Ants live in organized colonies with a queen and worker ants. They communicate using pheromone trails, which cause them to march in lines. Carpenter ants excavate wood to build nests (they do not eat wood) and can cause structural damage over time.
Warning Signs
- •Visible ant trails along baseboards, countertops, or exterior walls
- •Small piles of sawdust or wood shavings near carpenter ant nests
- •Soil mounds in lawns or along concrete walkways
- •Rustling sounds inside walls in large carpenter ant colonies
- •Winged ants flying indoors during spring swarming events
Prevention Tips
- Seal cracks and gaps around doors, windows, and foundation walls
- Keep food in airtight containers and wipe down counters regularly
- Fix leaky pipes because moisture attracts carpenter ants
- Trim tree branches and vegetation away from the house
- Remove woodpiles and leaf litter near the building foundation
Treatment Approaches
Ant control involves identifying the species and locating the primary nest. Baiting systems allow workers to carry active ingredients back to the colony, eliminating the queen. Perimeter treatments prevent re-entry into living spaces.
Use this guide safely
- Confirm the insect before treating
- Read product labels
- Keep treatments from children and pets
- Check local regulations
- Monitor after treatment