Kitchen sill and caulk line
Follow the ant trail back to the sill
A thin line of ants along the kitchen counter almost always leads back to a gap in the caulk or a damp spot inside the wall.
The trail and the sill
Ants walk the same path every time. The first one to find a crumb lays down a scent line, and the rest follow it like a rail. That is useful, because it turns the trail into a map. Watch where the line goes on the counter and you can follow it to the place it comes in: a gap where the caulk has shrunk away from the window sill, a crack under the back door, a hole where a pipe goes through the wall.
In an older Johnston house with clapboard and tired window trim, the outside sill and the corner boards give them plenty of soft wood to nest in. Carpenter ants, the big black ones, chew galleries into damp or rotted wood. Smaller ants usually nest in the soil or inside the wall and only visit the kitchen. Knowing which kind you have changes what needs looking at.
Note the size and color, note where the line starts and ends, and call (401) 467-3344 with the description. The family takes it from there with an inspection.
Kitchen windowsill with a small gap in the caulk where it meets the counter
Why sprays scatter colonies
A can of spray from the hardware store kills the ants you can see, which is a small fraction of the colony. Most of it sits in the nest with the queen, and a contact spray in the kitchen can push workers to split off and set up new nests nearby. The trail vanishes for a week, then comes back in two places.
That is why the trail matters more than the ants on the counter. The goal is to find where they come in and where they nest, then deal with that. Wiping a trail with soapy water breaks the scent line and buys an afternoon, but it doesn't solve the problem.
If ants are coming out of a wall, a window casing, or a spot beside a damp beam, mark the place and tell whoever inspects the house. What happens behind the plaster is not something to guess at.
Keeping the kitchen dry
Ants come for food and water, and in a kitchen the water is the easier one to take away. A dripping trap under the sink, a dishwasher hose with a slow weep, a refrigerator drain pan, a plant saucer on the sill. Fix those and the kitchen gets less interesting to them.
Then take away the food. Wipe the counter at night, keep pet food in a sealed bin, rinse the recycling, and put honey, syrup, and sugar in lidded jars. Pull out cracked caulk along the sill and run a new bead. Outside, trim shrubs back from the clapboard, keep mulch below the sill plate, and stack firewood away from the wall.
A dry, sealed house is a hard place for ants to stay. If the line keeps coming back in Johnston after all that, call the family at (401) 467-3344 and tell them where it starts.
Family owned and run in Johnston for over 30 years. Call (401) 467-3344.
More that shows up in a damp kitchen or cellar
Moisture draws more than one pest. See everything the family handles on the pests we treat page, or send a message about the trail you found.