Once the ants are gone, the most important question is how to keep them from coming back. The answer is to remove whatever attracted them in the first place. Without that, a new colony will find its way to the same cracks.
These steps complete the ant elimination plan and build on what we explained in why ants appear.
The idea: Keeping ants from returning depends on removing what attracted them, not on repeated spraying.
Entry points: Cracks around doors and windows and around pipes are the main routes in, so seal them.
Food: Crumbs, sweets and uncovered pet food attract colonies, so store them in airtight containers.
Water: Leaks and moisture around sinks and air conditioners attract ants, so fix leaks early.
Follow-up: Check for ant trails weekly at first, and deal with any new activity as soon as it appears.
Seal the Entry Points
Any gap the width of a sheet of paper is enough for a whole colony to get in. Inspect your home inside and out.
- Cracks around doors and windows: Seal with silicone or weatherstripping.
- Around pipes and cables: Use an insect-resistant sealant.
- Foundations: Any crack in exterior tiles or flooring.
- Ventilation openings: Cover with fine mesh.
Manage Food
The smallest scrap of food can bring a colony back.
- Airtight storage: Keep rice, sugar and honey in well-sealed containers.
- Daily wipe-down: Clean surfaces and the spaces under appliances.
- Pet bowls: Do not leave them out overnight.
- Trash: Use a tight lid and empty it daily.
Water and Moisture
Moisture attracts ants and favors carpenter ant nests in wood.
- Fix leaking faucets and pipes.
- Dry sinks and basins at night.
- Keep air conditioner drain water away from walls.
- Reduce watering of indoor plant pots.
Around the House
Most of the prevention happens outside the walls:
- Trim branches: Any that touch the roof or the wall.
- Move firewood and lumber: Keep it away from walls and off the ground.
- Remove visible nests: Use bait before they spread.
- Perimeter spray: On foundations and thresholds once or twice a season.
A Simple Monitoring Routine
- Check the kitchen and bathroom weekly for any ants.
- Keep two small bait dots behind appliances for monitoring.
- Renew the outdoor barrier every season, before the rains and the summer.
Mistakes That Bring Ants Back
- Leaving food on tables overnight: The most tempting invitation for ants.
- Ignoring small cracks: The smallest opening is enough.
- Branches touching the house: Bridges that nobody notices.
- Removing the trail without sealing the source: The ants return after a few days.
Simple Daily Habits
- Wipe surfaces after every meal.
- Take out the trash at night.
- Cover pet bowls after feeding.
- Check houseplant soil for ants.
Kitchen Setup
The kitchen is the number one attraction. Spend a few minutes at the end of the day checking the critical spots: under the microwave, around the gas stove, along drawer edges and behind the refrigerator. Wipe up sugar and bread crumbs, wash cups with leftover juice or tea, and dry the sink before bed.
- Keep rice, sugar and flour in airtight containers instead of bags.
- Empty the trash daily and wash the bin from time to time.
- Do not leave the pet food bowl out overnight.
Seal Entry Points with the Right Materials
Look for cracks around pipes, window frames, under doors and around air-conditioning openings. Small cracks can be sealed with a sealant or silicone suited to the spot, and larger gaps around plumbing pipes should be closed with a dedicated filler. Also check window screens and upper vents, because fixing a single opening can save you months of trouble.
The Outer Boundary
Cut back branches that touch the wall, move stacked wood and stones away from the foundation, and fix any leak at the garden tap. You can also add a perimeter treatment with a suitable product where ants keep getting in, following the label instructions and keeping it away from children and pets.
Pets and Plants
Water bowls and dishes left out attract ants at night. If aphids appear on your plants, treat them, because their sweet secretions bring ants to the window. Also move plant pots away from the wall as far as possible to cut the bridge between the soil and the inside of the house.
Products from the Orkida Store
We start with bait because ants carry it back to the nest, and we add a perimeter treatment when needed. We advise following the dose and safety interval written on the product label.
- Professional Ant Control Package for Homes: A professional package combining bait and perimeter treatment. We prefer it when the nest is outside the building and needs a barrier at the entry points.
- Economy Ant Control Package for Homes: An economy package that covers apartments and light infestations.
- Advion Ant Gel 30 g: An indoxacarb gel. Apply small dots along ant trails and the workers carry it to the nest and share it with everyone, queen included. It is the foundation of any plan.
A Ten-Minute Weekly Plan
- Wipe and dry the surfaces where food gets scattered.
- Check the usual ant entry points: the door threshold, the window, under the sink.
- Check pet bowls, plants and pots.
- Take out the trash, change the bag and clean the base of the bin.
- Note any new ant trail and where it appeared.
Consistency matters more than intensity: small daily steps prevent a big problem later, and any new ant activity is caught early before a colony is established.
Frequently Asked Questions
How often should I treat the perimeter?
Once or twice a year is usually enough, before the rainy and hot seasons.
Are natural repellents enough?
Vinegar and cinnamon repel ants a little, but they are no substitute for sealing cracks and managing food.
Should I get rid of my houseplants?
No. Just reduce watering and watch the soil so that it does not turn into a nest.
Why do ants keep coming back despite everything?
The colony may be in a neighboring house or under the pavement, so the solution is outdoor bait together with sealing the entry points.
Image source: T.K. Naliaka, Wikimedia Commons (CC BY-SA 4.0)
Frequently Asked Questions About Ant Prevention
What attracts ants to the house?
Food scraps, sugars and spilled drinks, water leaks, gaps around doors and cracks, uncovered trash bags and pet food.
Is it enough to kill the ants I can see?
No. The visible ants are a small part of the colony. It is better to use bait that workers carry to the nest so it reaches the queen, while sealing the entry points.
How do I trace the ant trail?
Watch the line they follow from the food and walk it backward until you find their entrance or nest, then treat the trail and the entrance, not just the place where they appear.
How long does it take to get rid of them?
It depends on the size of the infestation, but bait usually needs days to affect the nest, so do not clean the ant trail with a fast-acting insecticide while using bait.