Table of Contents
7 Household Ant Remedies: What Works and What Doesn’t
Dealing with ants in your home can be frustrating, especially when they keep coming back after you clean them up. Many homeowners look for quick, low-cost ways to kill ants or stop them from trailing through the kitchen, bathroom, or pantry.
Some household products can help with small ant problems. They may kill visible ants, wipe away pheromone trails, or temporarily discourage ants from entering certain areas. However, most DIY ant remedies do not eliminate the colony. If the nest, queen, or outdoor entry points remain active, ants can return.
For long-term ant control, the most important steps are identifying the ant species, removing food and water sources, sealing entry points, and targeting the colony when needed. UC IPM recommends combining sanitation, exclusion, and baiting when necessary rather than relying only on indoor sprays or short-term treatments.
1. Vinegar and Water
A mixture of vinegar and water can help clean ant trails and temporarily disrupt the chemical scent paths ants use to move between their nest and food sources.
To use it, mix equal parts white vinegar and water in a spray bottle. Lightly spray or wipe areas where ants have been active, such as:
- Countertops
- Windowsills
- Door thresholds
- Baseboards
- Around trash cans
- Near sinks
Vinegar is best used as a cleaning and trail-disruption tool, not a complete ant-control solution. It may reduce visible ant activity for a short time, but it will not kill the queen or eliminate the colony.
Nebraska Extension cautions that common deterrents like vinegar, lemon water, and cinnamon are unlikely to be long-term cures for ant problems.
2. Lemon Juice and Water
Lemon juice may work similarly to vinegar by helping mask or disrupt ant trails. It can be used to wipe areas where ants are entering or trailing indoors.
Mix one part lemon juice with three parts water, then apply it to hard surfaces where ants have been seen. Wipe the area afterward to remove food residue and scent trails.
However, lemon juice should not be presented as a reliable ant killer or a solution for all ant species. It may temporarily repel or confuse ants, but it will not eliminate a nest.
3. Citrus Blend
Image via Flickr by AtomicP
Citrus-based cleaners or diluted citrus solutions may help wipe away ant trails indoors. However, citrus peels or homemade citrus mixtures are not reliable colony treatments and should not replace proper ant identification, baiting, or professional control when ants keep returning.
4. Boiling Water
If you don’t have citrus peels, you can also kill ants by pouring boiling water into an ant hill. You can do this with a funnel or a watering pot for flowers, but be mindful of the heat.
Boiling water can kill ants on contact and may reduce activity in small outdoor mounds. However, it is not always effective against large or deep colonies, and it can cause serious burns. Boiling water may kill ants in a mound, but it can also burn skin, damage grass or plants, and fail to reach the queen. It should never be used indoors, near electrical areas, or where children or pets are nearby.
For fire ants, Mississippi State Extension notes that boiling water can work only if enough hot water reaches the mound; it says 2–3 gallons may be needed per mound and recommends granular bait treatments for better control.
5. Diatomaceous Earth
Diatomaceous earth (dai-uh-tuh-may-shuhs), often called DE, is a powder made from fossilized aquatic organisms called diatoms. It can kill ants and other insects by damaging their outer layer and absorbing oils and fats from the insect’s exoskeleton. It remains effective only when it stays dry and undisturbed.
To use diatomaceous earth for ants, simply sprinkle it around areas likely to attract the insects, such as cabinets, window sills, and door. You can also sprinkle some directly onto hills. This method works to kill any type of ants — the mixture dries out insects’ exoskeletons, so it’s an effective solution for ants and critters like lice and roaches. Diatomaceous earth can help kill ants that crawl through it, but it does not attract ants or eliminate hidden colonies. Use it lightly in dry cracks, crevices, and inaccessible areas, and avoid applying it where children, pets, fans, air vents, or foot traffic can stir up dust.
Use food-grade or pesticide-labeled diatomaceous earth only according to directions. Diatomaceous earth is nontoxic for humans but you may want to wear a dust mask when sprinkling it around the house, however, to avoid breathing it in and aggravating your lungs.
6. Dish Soap and Water
Dish soap and water is another effective solution for a variety of insects, including all types of ants. It’s also safe for humans and won’t lead to any serious problems if consumed. Prepare your DIY solution by mixing equal parts dish soap and water in a spray bottle. Ants breathe through their joints, and by coating them with soapy water, they suffocate. This trick also treats the chemical ants leave behind for others to follow.
Since this solution will only kill ants by contact, it’s best used in conjunction with a method that targets the queen and will eliminate entire colonies.
7. Boric Acid
Boric acid can be effective in ant baits when used properly. It works best when ants eat it and carry the bait back toward the colony. Boric acid can kill insects if they eat it by disrupting their stomach and affecting their nervous system.
Boric acid kills most ant species, but it’s toxic to humans if ingested. Side effects include vomiting and other stomach-related problems. It will irritate the skin and is far more dangerous if it comes into contact with your eyes.
If using boric acid or borax bait, use a labeled ant bait station and follow the product instructions carefully. Keep bait away from children, pets, food, dishes, and food-prep surfaces.
Why DIY Ant Remedies Often Fail
Many household ant remedies only affect the ants you can see. The real problem is usually the colony.
DIY remedies may fail because:
- The nest is outdoors or inside a wall void
- The queen is not affected
- The ants find a new trail
- Food or moisture sources remain available
- The wrong bait is used for the ant species
- The infestation involves carpenter ants, fire ants, or another species that needs targeted treatment
NPIC recommends identifying the ant species before choosing a treatment strategy because control methods can differ for fire ants, carpenter ants, and other ant species.
Better Ways to Prevent Ants
The best long-term ant control starts with making your home less attractive to ants.
To help prevent ants:
- Store food in sealed containers
- Clean up crumbs, grease, spills, and pet food
- Empty trash and recycling often
- Fix leaky pipes and moisture problems
- Seal cracks and gaps around doors, windows, pipes, and foundations
- Trim plants and branches away from the home
- Keep mulch, grass, and plants away from the foundation when possible
- Wipe ant trails with soapy water when you see them
UC IPM recommends caulking entry points, cleaning up food sources, fixing leaks, managing vegetation, and using outdoor baits when needed.
When to Call a Professional
Household remedies may help with a few ants, but recurring ant problems usually need professional treatment.
Call a pest control professional if:
- Ants keep coming back after cleaning
- You see ants in multiple rooms
- You find outdoor mounds near your home
- You suspect carpenter ants
- You are dealing with fire ants
- You cannot find where ants are entering
- You have children or pets and want safer bait placement
A professional can identify the ant species, locate likely nesting sites, treat entry points, and use the right bait or treatment for the colony.
For recurring ant problems, contact Bulwark Exterminating to schedule an inspection and get a customized ant control plan.
