How to prevent rodents from entering your home and avoid hantavirus

Published on May 07, 2026 | Translated from Spanish

The presence of rodents in the home is not only annoying, but also represents a real risk of hantavirus infection. To reduce this danger, the main strategy is to prevent their entry. Actions such as sealing cracks and holes in walls and baseboards, storing food in airtight containers, and maintaining rigorous cleaning of floors and surfaces are effective measures. Prevention begins by blocking their path and eliminating their food sources.

Homemade infographic: hands sealing cracks in baseboard, rodenticide and trap nearby, food in airtight jars, clean floor.

Physical barrier systems for urban pest control 🛡️

Technology applied to prevention focuses on physical barriers. The use of stainless steel wire mesh with openings smaller than 6 mm is recommended to cover vents and drains. For sealing gaps around pipes, professional-grade polyurethane expanding foams offer a durable solution, as rodents do not easily gnaw through them. On garage doors, rubber thresholds and metal brush barriers prevent passage under the door. Periodic inspection of these points is key to maintaining perimeter integrity.

The mouse that slipped through a hole the size of a charger 🐭

You think your house is a fortress, but for a mouse it's more like Swiss cheese. It turns out these rodents can fit through an opening the diameter of a pencil. So, while you're proud of your armored door, a mouse is getting in through the gap left by the router cable. Next time you see a hole in the wall, don't think about calling the handyman; think of it as a highway for your new unwanted tenant. The irony: your house is safe for you, but for them it's an amusement park with an all-you-can-eat buffet.