How to get rid of ants?

How to Get Rid of Ants: Step-by-Step Guide

Ants are the #1 nuisance pest in America, and nearly every homeowner deals with them at some point. The key to getting rid of ants is understanding the species you're dealing with and targeting the colony — not just the visible ants. Killing the ants you see is futile if the queen continues producing thousands more. Here's how to eliminate them for good.

Step 1: Identify the Ant Species

Different ants require different treatments:

Ant Type	Appearance	Where Found	Threat Level
Odorous house ants	Small, dark brown/black, 1/16–1/8"	Kitchen, bathroom, near moisture	Low — nuisance only
Carpenter ants	Large, black, 1/4–1/2"	Wood structures, trees, decks	High — cause structural damage
Fire ants	Reddish-brown, 1/8–1/4"	Outdoor mounds, yards (Southern U.S.)	High — painful stings
Pavement ants	Dark brown/black, 1/8"	Driveways, patios, foundations	Low — nuisance only
Pharaoh ants	Yellow/light brown, tiny (1/16")	Hospitals, apartments, kitchens	Medium — hard to eliminate, spread bacteria

Step 2: Use Ant Baits (Most Effective DIY Method)

Ant baits are the most effective consumer-grade treatment because ants carry the bait back to the colony and feed it to the queen. This kills the entire colony, not just foragers.

Best Ant Baits

• Terro Liquid Ant Baits (borax-based, $7–$12) — Best for sugar-feeding ants like odorous house ants. Place near ant trails; don't disturb for 2–3 days.
• Advion Ant Gel ($20–$30) — Professional-grade gel bait. Apply small dots along trails and entry points. Works on multiple species.
• Amdro Ant Block ($10–$15) — Granular bait for outdoor use. Spread around the perimeter and near mounds.
• Combat Max Ant Killing Gel ($8–$12) — Good for indoor cracks and crevices.

Important: Don't spray ants with Raid or other contact killers while using baits — it repels ants from the bait. Let them take the bait back to the colony.

Step 3: Seal Entry Points

Ants enter through tiny cracks and gaps. Seal these common entry points:

• Gaps around windows and door frames (use silicone caulk, $3–$8/tube)
• Cracks in the foundation
• Where pipes and wires enter the house
• Gaps under doors (install door sweeps, $8–$15)
• Around electrical outlets on exterior walls

Step 4: Eliminate Food and Water Sources

• Wipe down counters and stovetops daily — even small crumbs attract ants
• Store food in sealed containers (not just twist-tied bags)
• Don't leave pet food out overnight
• Fix leaky faucets and pipes — ants need water as much as food
• Take out trash regularly and use bins with tight-fitting lids
• Rinse recyclables before storing
• Clean up sticky residue from juice or soda spills immediately

Step 5: Outdoor Prevention

• Trim branches and vegetation that touch your house (these are ant highways)
• Apply a perimeter spray like Ortho Home Defense ($15–$20) around the foundation
• Move mulch at least 12 inches away from the foundation
• Remove woodpiles and debris near the house
• Treat fire ant mounds directly with granular bait (Amdro) or mound drench

Special Cases

Carpenter Ants

If you see large (1/4–1/2") black ants, especially near wood structures, you may have carpenter ants. Unlike termites, they don't eat wood but excavate it for nesting, causing structural damage. Look for piles of sawdust-like frass near baseboards or windowsills. Carpenter ants require professional treatment ($250–$500) because the nest must be located and treated directly.

Fire Ants

In the Southeast and Southwest, fire ant mounds should be treated with a two-step approach: broadcast granular bait (like Amdro or Extinguish Plus) over the yard, then individually treat remaining mounds with liquid drench or dust.

When to Call a Professional

Call a professional exterminator if:

• You suspect carpenter ants (large black ants, sawdust piles)
• Baits haven't reduced activity after 2 weeks
• Ants keep returning despite sealing and cleaning
• You have a large fire ant problem across your yard
• The infestation is in walls, ceilings, or hard-to-reach areas

Professional ant treatment costs $150–$300 for a one-time visit or $100–$200/quarter for ongoing service. Find a local pest control pro at ProFindr to get quotes.

Frequently Asked Questions

Why do ants suddenly appear in my house?

Ants send scout foragers to find food and water. When a scout finds a source, it leaves a pheromone trail for others to follow. This is why you'll see a sudden trail of ants leading to a crumb or spill. Seasonal changes (spring warmth, fall cooling) also drive ants indoors.

Does vinegar get rid of ants?

Vinegar disrupts pheromone trails and can deter ants temporarily, but it doesn't kill them or affect the colony. It's useful for wiping down surfaces to remove trails, but it's not a solution on its own. Use baits for real elimination.

How long does it take to get rid of ants with baits?

Expect to see reduced activity within 3–5 days and significant improvement within 1–2 weeks. Complete colony elimination can take 2–4 weeks. Be patient — more ants visiting the bait initially is actually a good sign.

Are ants dangerous?

Most house ants are just a nuisance. However, carpenter ants cause structural damage, fire ants deliver painful stings (potentially dangerous for those with allergies), and pharaoh ants can spread bacteria in healthcare settings.

What attracts ants the most?

Sugar and grease are the top attractants. Ants are also drawn to pet food, ripe fruit, crumbs, moisture from leaky pipes, and even toothpaste residue. Eliminating these attractants is half the battle.