これさえ読めば安心! How to Prevent Ants from Coming in the Houseの進め方をステップバイステップで解説します。

Ants can squeeze through gaps the width of a credit card. Walk your home’s perimeter with a tube of silicone caulk or a simple spackle knife. Focus on where the floor meets the wall, around window frames, and where pipes enter under the sink.

I once watched a parade of ants disappear into a crack in the grout behind my backsplash. It took three minutes and a dab of clear nail polish to plug it. Three minutes. Now I keep a caulking gun in the junk drawer like a modern warrior’s sword.

How to Stop Ants From Coming in the House | Marks Pest Control

The “fairy door” trick

In folklore, people left doors for kitchen fairies. You want no doors at all. Use weather stripping on the bottom of exterior doors. And check your dryer vent cover—it’s a common highway for sugar ants that look like tiny black sedans on a secret mission.

Pro tip: Mix a paste of borax and powdered sugar and place it in bottle caps near entry points. The ants take the poison back to the colony as “groceries.” It’s the Trojan horse of pest control—dark, but effective.