How To Get Rid of Ants in the House Quickly (and Keep Them Out)

A line of ants across the counter is a sign that scouts found food and laid a chemical trail for the rest of the colony. Killing the visible ants helps for an afternoon, but the nest, often in a wall void, under flooring, or just outside the foundation, keeps sending more. The approach below clears what you see quickly and then takes out the source.

Why Are Ants Suddenly in Your House?

Ants come indoors for three things: food, water, and shelter. Spring and early summer bring the most activity as colonies expand, and heavy rain or drought often drives them inside. Kitchens and bathrooms are the usual hot spots because they offer crumbs, sugary spills, pet food, and moisture around sinks and pipes.

Common causes include unsealed food, dirty dishes, sticky soda cans in recycling bins, pet bowls left out, leaking pipes, and gaps around windows, doors, and utility lines.

What Kind of Ants Do You Have?

Identifying the ant helps you choose the right method. A close look with a phone camera is usually enough.

How to Get Rid of Ants in the House Quickly

Step 1: Follow the Trail to Find the Entry Point

Before wiping anything, watch where the line of ants goes. Follow it to a crack in the baseboard, a gap around a window, an outlet, or a pipe opening. Mark the spot with painter’s tape so you know where to place bait and where to seal later.

Step 2: Remove the Visible Ants and Their Scent Trail

Wipe the ants and the path they used with warm soapy water or a 1:1 mix of white vinegar and water. This kills the ants on contact and erases the pheromone trail that guides the rest of the colony. Vacuuming works too; empty the canister or bag outside right away.

Step 3: Cut Off Food and Water

Store sugar, cereal, honey, syrup, and pet food in airtight containers. Wipe counters and sweep floors daily, rinse recyclables, take out trash, and avoid leaving pet bowls out overnight. Fix dripping faucets and wipe up water around sinks, since ants also come in to drink.

Step 4: Place Bait Stations Along the Trail

Put enclosed bait stations or dabs of gel bait right next to the trail and entry point, not on top of it. Commercial baits containing borax, boric acid, or slow-acting insecticides such as indoxacarb or fipronil work because foragers carry the bait home and feed it to the queen and larvae. A homemade option is 1 tablespoon of borax mixed into 1/2 cup of sugar water, soaked into cotton balls in a lidded container with holes.

Step 5: Leave the Bait Alone

Seeing more ants on the bait at first is a good sign; it means they are feeding. Do not spray, wipe, or clean around the stations for at least several days. Replace the bait when it dries out or empties, and expect activity to drop over one to two weeks.

Step 6: Seal Entry Points

Once activity stops, seal the cracks and gaps you marked with silicone or acrylic caulk. Add door sweeps and repair torn window screens. Fill gaps around pipes and cables with caulk or expanding foam.

Step 7: Treat the Outside Perimeter

Many indoor ants nest outdoors. Trim shrubs and branches so they do not touch the house, pull mulch a few inches back from the foundation, and place outdoor bait stations near nests or trails. Granular baits or a labeled perimeter treatment can help, applied strictly according to the label.

Do Natural Ant Remedies Work?

Some do, mainly as repellents or trail cleaners rather than colony killers. They are useful for prevention and in areas where you prefer not to use insecticides.

• White vinegar: erases scent trails and kills ants on contact, but does not affect the nest.
• Soapy water: a simple dish soap spray kills ants on contact by breaking down their outer coating.
• Food-grade diatomaceous earth: a fine powder that damages ants’ exoskeletons; works only while dry, so dust it thinly into cracks and wall voids, not wet areas.
• Peppermint, tea tree, or citrus oils: may repel ants temporarily. Many essential oils are toxic to cats and dogs, so use them cautiously in homes with pets.
• Cinnamon, coffee grounds, or chalk lines: may deter a few ants but are unreliable.

For a deeper look at how vinegar behaves as a cleaner, see this guide to practical vinegar uses around the house.

Is Borax Safe Around Kids and Pets?

Borax and boric acid have low toxicity in the small amounts used in ant baits, but they can still cause vomiting and other symptoms if a child or pet eats enough. Use enclosed, tamper-resistant bait stations, place them behind appliances or inside cabinets, and keep homemade baits out of reach. If a child swallows bait, call Poison Control at 1-800-222-1222; for pets, call your veterinarian or a pet poison hotline.

Common Mistakes That Keep Ants Coming Back

• Spraying insecticide on ants that are feeding on bait, which stops them carrying it home.
• Using repellent sprays on Pharaoh ants, which can cause the colony to split into several new ones.
• Leaving a single crumb source, such as a toaster or pet food bin, that competes with the bait.
• Giving up after two days; colonies with multiple queens take longer to collapse.
• Ignoring moisture problems that attract ants and other pests.

Ants are not the only pests that hide in cracks and seams. If you also suspect bed bugs, learn how to check for bed bugs before treating, and clear webs and egg sacs with these tips on removing cobwebs from high ceilings.

How Do You Keep Ants Out for Good?

• Clean kitchen surfaces nightly and sweep under appliances weekly.
• Keep food, including pet food and birdseed, in sealed plastic or glass containers.
• Fix leaks under sinks and around dishwashers and refrigerators.
• Seal gaps in the foundation, window frames, and utility penetrations.
• Keep firewood, mulch, and plant branches away from exterior walls.
• Check for new trails in spring and put out bait at the first sign.

When Should You Call a Pest Control Professional?

Call a licensed pest control company if you see carpenter ants or sawdust-like debris, which can signal damage to wood framing; if ants keep returning after two to three weeks of baiting; if you have fire ants near play areas; or if ants are nesting inside walls you cannot access. Professionals can identify the species precisely and use non-repellent products that are not sold to consumers.

Frequently Asked Questions