Seeing one ant in the kitchen does not automatically mean you have an infestation.
The stronger clue is repetition. BPCA says it is the foraging worker ants that enter buildings in search of food, especially sweet foodstuffs, and that nest entrances can often be traced by watching ants moving back and forth between food and the nest.
Common signs of an ant infestation in the home include:
BPCA says nest entrances are often marked by small piles of earth pellets and can be located by following the movement of worker ants. It also notes that flying ants are the reproductive males and females and that swarming usually happens over a few days in July or August.
This is usually the first thing people notice.
If ants keep showing up along the same skirting board, windowsill, worktop edge, or doorway, that usually means they have already established a reliable route between food and the nest. BPCA’s public ant guidance specifically says watching the ants moving back and forth is one of the best ways to find the nest entrance.
Black garden ants are the most common ants invading UK homes, and BPCA says the worker ants are attracted to sweet foodstuffs which they carry back to the larvae and queen.
So if ants keep appearing around sugar, fruit, crumbs, sticky spills, or pet food, that is not random bad luck. It is usually a sign that the workers have already worked out where the easy food is.
People often miss this because they are focused on the ants themselves.
BPCA says nest entrances may be indicated by small piles of earth pellets. The Natural History Museum also notes that black garden ants often nest in dry soil and that, before swarming, heaps of soil can appear above nests.
So if you are seeing ant traffic and little piles of loose soil near paving, cracks, or the edge of the house, that is worth taking seriously.
Flying ants tend to alarm people because they appear suddenly.
In the UK, the winged ants you usually see are sexually mature queens and males of the black garden ant. The Natural History Museum says this swarming usually happens in July or August, though it can occur any time between June and early September depending on weather.
That does not always mean the house is overrun, but it does mean there is an established colony somewhere nearby. BPCA and RHS both explain that winged ants are produced by nests when the colony is ready to reproduce.
This is the part people get frustrated by.
If you wipe away a few ants and they return a day or two later, the issue is usually not the visible ants themselves. It is the nest behind them. BPCA says workers carry food back to the larvae and queen, and some ant baits work by being carried back into the colony. That tells you the real problem sits deeper than the ants on the surface.
The most common early hotspots are the places where food, moisture, or easy access come together.
That often means kitchens, utility areas, windows, door thresholds, patios, and the edges of rooms that connect to gardens or paved areas. BPCA’s guidance on following ant traffic back to nest entrances fits that pattern, and the Natural History Museum notes that black garden ants often nest under paving slabs, stones, and in dry open areas warmed by sunlight.
If you are seeing repeat trails, piles of soil, or flying ants around the same area, it usually makes more sense to treat it as an established problem than a one-off nuisance.
The key is not just killing the visible ants. It is working out where they are coming from and whether the nest is close to the property. If the signs keep showing up, Pest Gone can help you work out whether it looks like a minor ant issue or a more established infestation.
