Why do ants keep coming back after I wipe the counter?
Ants lay a scent trail that other workers follow, and wiping the trail removes it only for a short time. The colony usually sits outside the house, and the trail keeps leading back to the same entry point until the route is closed or the nest is treated.
A forager that finds food returns to the nest and leaves a scent trail on the way. Other workers follow it within minutes. When the trail is wiped away, the scent is gone, but the route is still there, and the next forager will re-lay it. This is why the same line of ants often reappears on the same counter day after day.
Cleaning the surface is still useful, because it removes the food that draws the foragers. The step that stops the cycle is finding the entry point and closing it, and then treating the colony where it is.
How do ants get into a house, and where are the routes?
Ants enter through cracks and gaps in the foundation, around window and door frames, along utility lines and under the sills. Each route is small, and many are hidden behind trim, cabinets or appliances, so a technician has to trace the trail to find it.
The gaps most often used are the joints where the slab meets the wall, the holes where a pipe or cable comes through, and the openings around the window frame. Ants can get through very small cracks, so a visual check from the room is not enough. The trail is usually the best guide to where the gap is.
Outside, the patio edge, the landscape bed and the foundation are the places to check. Ants often nest in soil or under paving and travel into the house through a gap at the base of the wall.
Should I use a bait or a spray for ants?
Bait is usually the better choice when the colony is the target, because the workers carry it back to the nest. A spray can kill the foragers in view but leaves the colony intact. The choice depends on the species, the location and the people and pets in the home.
Baits are placed in the spots where the foragers are already feeding, and the ants carry the bait back to the nest and share it. Results can take several days, and the technician will explain the timing so you do not mistake a short increase in activity for a failure.
Sprays are used more often on the edges of a problem, such as a line along the outside wall, or at a crack the trail uses. They are placed away from food preparation surfaces, and the technician explains which areas are off limits until the product has dried.
How do I tell a carpenter ant from other house ants?
Carpenter ants are usually larger and darker than the usual house ants, and they tend to leave sawdust-like material near wood. The distinction matters because the nest may be in the wood of the house, which changes the plan.
A technician checks the ants by size, colour and behaviour, and by looking at the material near wood. Hollowed or smoothed wood, sawdust-like debris and a rustling sound inside a beam can all point to a nest in the structure. Those signs call for a closer inspection before any treatment is decided.
A nest in the wood of a house is a structural concern as well as a pest problem. The technician will explain what was found, and will tell you when the carpentry question should be raised with a builder or a qualified contractor.
What makes ant work cost more or less here?
The price depends on how many trails and entry points there are, whether a nest is inside the wall or outside, how much sealing is needed, and how many follow-up visits the plan requires. The technician explains the price before any product is applied.
A single trail under one cabinet is a short job. Several trails, a nest in a wall void, or an outdoor colony that needs treatment across the yard take more time and more visits. Access also matters, since a crawl space or a locked room adds time to the inspection.
The price is set on the visit, and it is confirmed with you before any work starts. Follow-up checks are priced according to what is left to do, and the technician explains that before the plan begins.
