Baiting is the most effective strategy for eliminating ant colonies because it exploits their social behavior - workers share food with the queen and larvae through trophallaxis (mouth-to-mouth feeding). When workers carry bait back to the nest, the entire colony is exposed, including the queen. Kill the queen, kill the colony.
All common household ants: odorous house ants, Argentine ants, pavement ants, pharaoh ants, carpenter ants, ghost ants, white-footed ants, little black ants, fire ants. Different ant species require different bait types - this guide covers all of them.
Gel baits: Advion Ant Gel (indoxacarb - top professional choice), Optigard Ant Gel (thiamethoxam), Maxforce Quantum (imidacloprid). Liquid baits: Terro Liquid Ant Baits (borax), Optigard Ant Bait Gel, KM Ant Pro stations (boric acid). Granular baits: Advion Ant Bait Arena, Maxforce Complete Granular, Amdro Ant Block, Extinguish Plus (for fire ants).
Step 1: Identify the ant species.
Different ants prefer different bait types. Sweet-feeding ants (odorous house, Argentine, ghost) prefer liquid sugar baits. Protein/grease-feeding ants (pharaoh, thief, big-headed) prefer protein baits. Many species alternate between sweet and protein preferences seasonally. Use our pest ID flowchart to identify your ants.
Step 2: Match the bait to the species.
| Ant Species | Preferred Bait Type | Top Product |
|---|---|---|
| Odorous house ant | Sweet liquid | Terro Liquid Baits or Advion Gel |
| Argentine ant | Sweet liquid | Optigard Ant Gel or KM Ant Pro |
| Pavement ant | Sweet or protein | Advion Ant Gel |
| Pharaoh ant | Protein/grease | Advion Ant Gel (NEVER spray) |
| Carpenter ant | Sweet liquid + protein | Advion Gel + Maxforce Carpenter Ant Gel |
| Ghost ant | Sweet liquid | Optigard or Terro |
| Fire ant | Oil/protein granular | Extinguish Plus or Advion Fire Ant |
| Little black ant | Sweet liquid | Terro Liquid Baits |
Step 3: Place bait correctly.
Place bait directly on or immediately adjacent to active ant trails. Do NOT clean up the trail first - you want ants to find the bait by following their existing pheromone highway. Use multiple small bait placements rather than one large one. Replace bait when consumed or dried out.
Step 4: Be patient.
Bait takes 3-14 days to eliminate a colony. You will see MORE ants initially as workers recruit others to the bait source - this is a GOOD sign. The colony is feeding. Resist the urge to spray. Within 1-2 weeks, ant activity should drop dramatically as the queen and brood die.
Step 5: Prevent reinvasion.
After the colony is eliminated, seal entry points with caulk, clean up food sources, and consider a non-repellent perimeter treatment (fipronil/Termidor or indoxacarb) around the foundation to intercept future foragers.
The Terro trick: Terro Liquid Ant Baits (borax) are the most widely available and effective consumer ant bait for sweet-feeding ants. At $5-8 per pack, they are also the cheapest professional-grade ant control available to homeowners. The slow-acting borax allows maximum colony transfer before workers die.