Follow the trail instead of wiping it clean
The scent trail strengthens with each ant that follows the same route, so a line left running only appears to get bigger, whether that's near Whitton, where quieter suburban streets with a mix of semis and terraced housing, or elsewhere in the borough. The smell only stays gone for an hour or two after cleaning, tracing where the line goes is what leads back to the colony, much as it does near Barnes, where village-style streets and large houses around the pond and the river towpath.
Where it usually enters the house

Pick a warm, still stretch of the day when ants are most active, and watch the line move off rather than breaking it up, much as it does near Whitton, where quieter suburban streets with a mix of semis and terraced housing. Common entry points include the back door threshold, a gap around pipework entering the kitchen, or the edge of a patio door.
Extensive gardens around Kew and Hampton

The larger gardens attached to the detached houses around Kew and Hampton give ants plenty of room to establish well away from the building itself, often under a path, a low retaining wall or the joints between old paving slabs, before a trail is ever noticed indoors.
What to leave alone for now
- Spraying the trail, which kills the foragers and leaves the colony intact
- Pouring boiling water into paving, which can damage old mortar without reaching the queen
- Sealing the entry gap before the nest itself has been dealt with
- Scattering household powders along the trail, which can split a colony into several smaller ones
Closing the way in afterwards
With the colony dealt with, go back and close only the gap the ants were actually using, a threshold, pipe hole, or crack in old mortar, true near Hampton too, where riverside houses and gardens close to Hampton Court and Bushy Park. Keep weep holes and air bricks open, blocking them as well only creates a damp problem inside the wall, much as it does near Teddington, where a mix of Victorian terraces and larger detached houses near Bushy Park and the.
Booking ant control in Richmond upon Thames
Ant control in Richmond upon Thames runs £190 for a flat and £220 for a house, and because around Hampton, where riverside houses and gardens close to Hampton Court and Bushy Park, it helps to say roughly whereabouts in the garden the nest might be when you book ant control, with the rest on the Richmond upon Thames ant control page.

