Ants in the house: how to deal with them without sprays

Start with the crumbs and the entrance, rather than the spray.

The answer in 2 lines. A trail of ants usually means they have found something worth collecting. Follow it before cleaning, put food into tightly closed containers, then wipe the route with soapy water. Check the door frame, skirting board or window where they enter and seal suitable gaps. These measures can reduce the problem without an insecticide, but there is no guaranteed clearance time. Persistent activity, especially throughout a block of flats, needs identification and a coordinated approach.

Start with these steps

Follow the trail to its food source and entry point. A photograph can help you explain a recurring problem.
Remove the attraction: wipe sugary spills, sweep crumbs and put opened food into tightly closed containers.
Clean the route with soapy water, including the entry area. Use a cleaning method suitable for the surface.
Close suitable gaps around frames and skirting boards. Keep ventilation openings clear.

Stop: danger

Suspected poisoning: follow the NHS poisoning advice. Call 999 or go to A&E if someone may have swallowed, touched or breathed in something harmful; call 111 if you are unsure whether the substance is harmful. Keep the packaging.
A pet exposed to insecticide: seek immediate veterinary advice. Do not wait for symptoms or try a home antidote.

Why ants keep coming back

Common black garden ants usually nest outdoors and enter homes looking for food, particularly sweet food. Workers leave scent trails that other ants follow. Cleaning the trail helps, but leaving the same sticky jar or open food packet in place gives them a reason to return.

This advice concerns ordinary foraging ants. It does not identify every ant species. Use Stevenage Borough Council's ant guidance to work through food storage, cleaning and entry points; seek identification if the pattern does not fit.

Make the kitchen less inviting

Wipe the outside and base of honey, jam and syrup containers.
Check beneath small appliances and along cupboard edges for crumbs.
Clear away pet food after feeding and clean spills around the bowl.
Keep bins closed and clean up food waste around them.
Inspect the route again after cleaning: ants may reveal another gap.

Seal an accessible crack with a material suitable for that location. Ask your landlord before altering rented fittings. Do not fill air bricks, drainage openings or appliance ventilation. Cleaning and sealing are complementary: neither comes with a promise that every colony will disappear.

What not to do

Spraying food, crockery or food preparation surfaces with insecticide.
Making homemade poison mixtures or treating essential oils as automatically safe for children and pets.
Pouring boiling water around the threshold: it creates a scalding risk and is unnecessary for cleaning an indoor trail.
Mixing cleaning products, or transferring insecticide into a food or drinks container.

If cleaning and sealing are not enough

An ant bait may be an option, but it remains a pesticide. Use only a product labelled for the general public, the target pest and the intended location. A closed bait station still needs to be inaccessible to children and pets. Follow its placement, checking and disposal instructions; do not combine treatments on your own initiative.

Read the HSE guidance on using biocides before buying: use its label checklist to check who may use the product and where. For continuing activity, ask a qualified pest controller to identify the ants and explain the proposed treatment.

Getting help in England

Use GOV.UK's pest control page and its local council link to check whether your council offers ant advice or treatment. Availability and charges vary; check before booking.

If you rent, report recurring ants and any damaged frames or wall gaps in writing. Where several flats are affected, include the shared areas and ask for the problem to be assessed across the building. For responsibility, use Shelter England's pest guidance to compare your circumstances with its repair and infestation examples. Housing rules differ in Wales, Scotland and Northern Ireland.

Good to know

A recurring trail does not automatically mean your kitchen is dirty: inspect food sources and access together.
Do not assume sawdust or damaged timber is caused by ants; ask for identification before choosing treatment.
Coffee grounds, chalk and citrus are not reliable substitutes for removing food and closing entry gaps.

Illustrative example: in Leeds, Amira follows ants to a sticky honey jar and a gap beside the patio door. She cleans the jar and trail, stores food in closed containers and photographs the damaged frame for her landlord. She watches for renewed activity rather than assuming that cleaning has destroyed the nest.

A made-up story, for illustration.

Bobby

Sources, verification, confidence

Verified on 5 November 2026, for England. Confidence: high for food hygiene, cleaning scent trails, exclusion and pesticide precautions; medium for success in an individual home, which depends on species and access. No clearance time or effectiveness claim for household repellents is promised.