Ants are coming in around doors in a slab-on-grade house
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Ants coming into house around doors and windows where there is slab on grade and concrete up to grade. Insulation mineral rock wool batts. How to prevent entry? This is a green build modeling passive standard. Polished concrete floor. Euroline 4700 series windows and doors. Located in central Okanagan British Columbia….we have a lot of species of ants. Want a product for outdoor sealing purposes good to -25, snow and rain and +37C. Do not want a rigid foam, given ants preference to this material.
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Replies
Run to a hardware store
Locate and acquire the appropriate insecticide (exterior).
Treat the exterior soil around the perimeter of the house.
Repeat in the Spring.
OR
Buy liquid ant baits or mix your own via mix one cup warm water with ½ cup sugar and 3 tablespoons borax. Soak it up with cotton balls and place them in shallow dishes near ant trails.) Resist the urge to kill all the ants you see. In a few days/weeks the colony will be drastically weakened if not killed off all together.
Ants live communally. If they are coming in, their nest is nearby - or worse their nest is in your house. You need to find the nest or nests and eliminate them. Trying to stop them getting into a house just doesn't work.